Merge pull request #12479 from freqtrade/feat/hyperopt_custom_spaces

Add support for custom hyperopt spaces

build_helpers/schema.json

@@ -301,18 +301,7 @@
       "description": "Hyperopt parameter spaces to optimize. Default is the default set andincludes all spaces except for 'trailing', 'protection', and 'trades'.",
       "type": "array",
       "items": {
-        "type": "string",
-        "enum": [
-          "all",
-          "buy",
-          "sell",
-          "roi",
-          "stoploss",
-          "trailing",
-          "protection",
-          "trades",
-          "default"
-        ]
+        "type": "string"
       },
       "default": [
         "default"

docs/commands/hyperopt.md

@@ -55,8 +55,9 @@ options:
   -e INT, --epochs INT  Specify number of epochs (default: 100).
   --spaces SPACES [SPACES ...]
                         Specify which parameters to hyperopt. Space-separated
-                        list. Available options: all, buy, sell, roi,
-                        stoploss, trailing, protection, trades, default.
+                        list. Available builtin options (custom spaces will
+                        not be listed here): default, all, buy, sell, enter,
+                        exit, roi, stoploss, trailing, protection, trades.
                         Default: `default` - which includes all spaces except
                         for 'trailing', 'protection', and 'trades'.
   --print-all           Print all results, not only the best ones.

docs/hyperopt.md

@@ -46,10 +46,17 @@ Depending on the space you want to optimize, only some of the below are required
 
 * define parameters with `space='buy'` - for entry signal optimization
 * define parameters with `space='sell'` - for exit signal optimization
+* define parameters with `space='enter'` - for entry signal optimization
+* define parameters with `space='exit'` - for exit signal optimization
+* define parameters with `space='protection'` - for protection optimization
+* define parameters with `space='random_spacename'` - for better control over which parameters are optimized together
+
+Pick the space name that suits the parameter best. We recommend to use either `buy` / `sell` or `enter` / `exit` for clarity (however there's no technical limitation in this regard).
 
 !!! Note
     `populate_indicators` needs to create all indicators any of the spaces may use, otherwise hyperopt will not work.
 
+
 Rarely you may also need to create a [nested class](advanced-hyperopt.md#overriding-pre-defined-spaces) named `HyperOpt` and implement
 
 * `roi_space` - for custom ROI optimization (if you need the ranges for the ROI parameters in the optimization hyperspace that differ from default)
@@ -79,15 +86,15 @@ Based on the loss function result, hyperopt will determine the next set of param
 
 ### Configure your Guards and Triggers
 
-There are two places you need to change in your strategy file to add a new buy hyperopt for testing:
+There are two places you need to change in your strategy file to add a new hyperopt parameter for optimization:
 
 * Define the parameters at the class level hyperopt shall be optimizing.
 * Within `populate_entry_trend()` - use defined parameter values instead of raw constants.
 
 There you have two different types of indicators: 1. `guards` and 2. `triggers`.
 
-1. Guards are conditions like "never buy if ADX < 10", or never buy if current price is over EMA10.
-2. Triggers are ones that actually trigger buy in specific moment, like "buy when EMA5 crosses over EMA10" or "buy when close price touches lower Bollinger band".
+1. Guards are conditions like "never enter if ADX < 10", or never enter if current price is over EMA10.
+2. Triggers are ones that actually trigger entry in specific moment, like "enter when EMA5 crosses over EMA10" or "enter when close price touches lower Bollinger band".
 
 !!! Hint "Guards and Triggers"
     Technically, there is no difference between Guards and Triggers.  
@@ -160,9 +167,11 @@ We use these to either enable or disable the ADX and RSI guards.
 The last one we call `trigger` and use it to decide which buy trigger we want to use.
 
 !!! Note "Parameter space assignment"
-    Parameters must either be assigned to a variable named `buy_*` or `sell_*` - or contain `space='buy'` | `space='sell'` to be assigned to a space correctly.
-    If no parameter is available for a space, you'll receive the error that no space was found when running hyperopt.  
+    - Parameters must either be assigned to a variable named `buy_*`, `sell_*`, `enter_*` or `exit_*` or `protection_*` - or contain have a space assigned explicitly via parameter (`space='buy'`, `space='sell'`, `space='protection'`).  
+    - Parameters with conflicting assignments (e.g. `buy_adx = IntParameter(4, 24, default=14, space='sell')`) will use the explicit space assignment.  
+    - If no parameter is available for a space, you'll receive the error that no space was found when running hyperopt.  
     Parameters with unclear space (e.g. `adx_period = IntParameter(4, 24, default=14)` - no explicit nor implicit space) will not be detected and will therefore be ignored.
+    Spaces can also be custom named (e.g. `space='my_custom_space'`), with the only limitation that the space name cannot be `all`, `default` - and must result in a valid python identifier.
 
 So let's write the buy strategy using these values:
 
@@ -520,21 +529,24 @@ freqtrade hyperopt --strategy <strategyname> --timerange 20210101-20210201
 ### Running Hyperopt with Smaller Search Space
 
 Use the `--spaces` option to limit the search space used by hyperopt.
-Letting Hyperopt optimize everything is a huuuuge search space.
-Often it might make more sense to start by just searching for initial buy algorithm.
-Or maybe you just want to optimize your stoploss or roi table for that awesome new buy strategy you have.
+Letting Hyperopt optimize everything is often a huuuuge search space.
+Often it might make more sense to start by just searching for initial entry algorithm.
+Or maybe you just want to optimize your stoploss or roi table for that awesome new strategy you have.
 
 Legal values are:
 
-* `all`: optimize everything
+* `all`: optimize everything (including custom spaces)
 * `buy`: just search for a new buy strategy
 * `sell`: just search for a new sell strategy
+* `enter`: just search for a new entry logic
+* `exit`: just search for a new entry logic
 * `roi`: just optimize the minimal profit table for your strategy
 * `stoploss`: search for the best stoploss value
 * `trailing`: search for the best trailing stop values
 * `trades`: search for the best max open trades values
 * `protection`: search for the best protection parameters (read the [protections section](#optimizing-protections) on how to properly define these)
 * `default`: `all` except `trailing`, `trades` and `protection`
+* `custom_space_name`: any custom space used by any parameter in your strategy
 * space-separated list of any of the above values for example `--spaces roi stoploss`
 
 The default Hyperopt Search Space, used when no `--space` command line option is specified, does not include the `trailing` hyperspace. We recommend you to run optimization for the `trailing` hyperspace separately, when the best parameters for other hyperspaces were found, validated and pasted into your custom strategy.

freqtrade/commands/cli_options.py

@@ -5,7 +5,10 @@ Definition of cli arguments used in arguments.py
 from argparse import ArgumentTypeError
 
 from freqtrade import constants
-from freqtrade.constants import HYPEROPT_BUILTIN_SPACES, HYPEROPT_LOSS_BUILTIN
+from freqtrade.constants import (
+    HYPEROPT_BUILTIN_SPACE_OPTIONS,
+    HYPEROPT_LOSS_BUILTIN,
+)
 from freqtrade.enums import CandleType
 
 
@@ -278,9 +281,12 @@ AVAILABLE_CLI_OPTIONS = {
     ),
     "spaces": Arg(
         "--spaces",
-        help="Specify which parameters to hyperopt. Space-separated list. Available options: "
-        f"{', '.join(HYPEROPT_BUILTIN_SPACES)}. Default: `default` - "
-        "which includes all spaces except for 'trailing', 'protection', and 'trades'.",
+        help=(
+            "Specify which parameters to hyperopt. Space-separated list. "
+            "Available builtin options (custom spaces will not be listed here): "
+            f"{', '.join(HYPEROPT_BUILTIN_SPACE_OPTIONS)}. Default: `default` - "
+            "which includes all spaces except for 'trailing', 'protection', and 'trades'."
+        ),
         nargs="+",
     ),
     "analyze_per_epoch": Arg(

freqtrade/commands/list_commands.py

@@ -101,7 +101,7 @@ def _print_objs_tabular(objs: list, print_colorized: bool) -> None:
     names = [s["name"] for s in objs]
     objs_to_print: list[dict[str, Text | str]] = [
         {
-            "name": Text(s["name"] if s["name"] else "--"),
+            "Strategy name": Text(s["name"] if s["name"] else "--"),
             "location": s["location_rel"],
             "status": (
                 Text("LOAD FAILED", style="bold red")
@@ -115,11 +115,19 @@ def _print_objs_tabular(objs: list, print_colorized: bool) -> None:
     ]
     for idx, s in enumerate(objs):
         if "hyperoptable" in s:
+            custom_params = [
+                f"{space}: {len(params)}"
+                for space, params in s["hyperoptable"].items()
+                if space not in ["buy", "sell", "protection"]
+            ]
+            hyp = s["hyperoptable"]
             objs_to_print[idx].update(
                 {
-                    "hyperoptable": "Yes" if s["hyperoptable"]["count"] > 0 else "No",
-                    "buy-Params": str(len(s["hyperoptable"].get("buy", []))),
-                    "sell-Params": str(len(s["hyperoptable"].get("sell", []))),
+                    "hyperoptable": "Yes" if len(hyp) > 0 else "No",
+                    "buy-Params": str(len(hyp.get("buy", []))),
+                    "sell-Params": str(len(hyp.get("sell", []))),
+                    "protection-Params": str(len(hyp.get("protection", []))),
+                    "custom-Params": ", ".join(custom_params) if custom_params else "",
                 }
             )
     table = Table()
@@ -140,6 +148,7 @@ def start_list_strategies(args: dict[str, Any]) -> None:
     """
     from freqtrade.configuration import setup_utils_configuration
     from freqtrade.resolvers import StrategyResolver
+    from freqtrade.strategy.hyper import detect_all_parameters
 
     config = setup_utils_configuration(args, RunMode.UTIL_NO_EXCHANGE)
 
@@ -153,9 +162,9 @@ def start_list_strategies(args: dict[str, Any]) -> None:
     strategy_objs = sorted(strategy_objs, key=lambda x: x["name"])
     for obj in strategy_objs:
         if obj["class"]:
-            obj["hyperoptable"] = obj["class"].detect_all_parameters()
+            obj["hyperoptable"] = detect_all_parameters(obj["class"])
         else:
-            obj["hyperoptable"] = {"count": 0}
+            obj["hyperoptable"] = {}
 
     if args["print_one_column"]:
         print("\n".join([s["name"] for s in strategy_objs]))

freqtrade/config_schema/config_schema.py

@@ -8,7 +8,6 @@ from freqtrade.constants import (
     BACKTEST_CACHE_AGE,
     DRY_RUN_WALLET,
     EXPORT_OPTIONS,
-    HYPEROPT_BUILTIN_SPACES,
     HYPEROPT_LOSS_BUILTIN,
     MARGIN_MODES,
     ORDERTIF_POSSIBILITIES,
@@ -260,7 +259,7 @@ CONF_SCHEMA = {
                 "includes all spaces except for 'trailing', 'protection', and 'trades'."
             ),
             "type": "array",
-            "items": {"type": "string", "enum": HYPEROPT_BUILTIN_SPACES},
+            "items": {"type": "string"},
             "default": ["default"],
         },
         "analyze_per_epoch": {

freqtrade/constants.py

@@ -42,16 +42,17 @@ HYPEROPT_LOSS_BUILTIN = [
     "MultiMetricHyperOptLoss",
 ]
 HYPEROPT_BUILTIN_SPACES = [
-    "all",
     "buy",
     "sell",
+    "enter",
+    "exit",
     "roi",
     "stoploss",
     "trailing",
     "protection",
     "trades",
-    "default",
 ]
+HYPEROPT_BUILTIN_SPACE_OPTIONS = ["default", "all"] + HYPEROPT_BUILTIN_SPACES
 
 AVAILABLE_PAIRLISTS = [
     "StaticPairList",

freqtrade/optimize/hyperopt/hyperopt_auto.py

@@ -7,6 +7,7 @@ This module implements a convenience auto-hyperopt class, which can be used toge
 import logging
 from collections.abc import Callable
 from contextlib import suppress
+from typing import Literal
 
 from freqtrade.exceptions import OperationalException
 
@@ -41,6 +42,13 @@ class HyperOptAuto(IHyperOpt):
     sell_indicator_space methods, but other hyperopt methods can be overridden as well.
     """
 
+    def get_available_spaces(self) -> list[str]:
+        """
+        Get list of available spaces defined in strategy.
+        :return: list of available spaces.
+        """
+        return list(self.strategy._ft_hyper_params)
+
     def _get_func(self, name) -> Callable:
         """
         Return a function defined in Strategy.HyperOpt class, or one defined in super() class.
@@ -59,7 +67,13 @@ class HyperOptAuto(IHyperOpt):
             if attr.optimize:
                 yield attr.get_space(attr_name)
 
-    def _get_indicator_space(self, category) -> list:
+    def get_indicator_space(
+        self, category: Literal["buy", "sell", "enter", "exit", "protection"] | str
+    ) -> list:
+        """
+        Get indicator space for a given space.
+        :param category: parameter space to get.
+        """
         # TODO: is this necessary, or can we call "generate_space" directly?
         indicator_space = list(self._generate_indicator_space(category))
         if len(indicator_space) > 0:
@@ -70,15 +84,6 @@ class HyperOptAuto(IHyperOpt):
             )
             return []
 
-    def buy_indicator_space(self) -> list["Dimension"]:
-        return self._get_indicator_space("buy")
-
-    def sell_indicator_space(self) -> list["Dimension"]:
-        return self._get_indicator_space("sell")
-
-    def protection_space(self) -> list["Dimension"]:
-        return self._get_indicator_space("protection")
-
     def generate_roi_table(self, params: dict) -> dict[int, float]:
         return self._get_func("generate_roi_table")(params)
 

freqtrade/optimize/hyperopt/hyperopt_optimizer.py

@@ -70,13 +70,7 @@ class HyperOptimizer:
     """
 
     def __init__(self, config: Config, data_pickle_file: Path) -> None:
-        self.buy_space: list[DimensionProtocol] = []
-        self.sell_space: list[DimensionProtocol] = []
-        self.protection_space: list[DimensionProtocol] = []
-        self.roi_space: list[DimensionProtocol] = []
-        self.stoploss_space: list[DimensionProtocol] = []
-        self.trailing_space: list[DimensionProtocol] = []
-        self.max_open_trades_space: list[DimensionProtocol] = []
+        self.spaces: dict[str, list[DimensionProtocol]] = {}
         self.dimensions: list[DimensionProtocol] = []
         self.o_dimensions: dict = {}
 
@@ -167,27 +161,25 @@ class HyperOptimizer:
         """
         result: dict = {}
 
-        if HyperoptTools.has_space(self.config, "buy"):
-            result["buy"] = round_dict({p.name: params.get(p.name) for p in self.buy_space}, 13)
-        if HyperoptTools.has_space(self.config, "sell"):
-            result["sell"] = round_dict({p.name: params.get(p.name) for p in self.sell_space}, 13)
-        if HyperoptTools.has_space(self.config, "protection"):
+        for space in self.spaces.keys():
+            if space == "protection":
                 result["protection"] = round_dict(
-                {p.name: params.get(p.name) for p in self.protection_space}, 13
+                    {p.name: params.get(p.name) for p in self.spaces[space]}, 13
                 )
-        if HyperoptTools.has_space(self.config, "roi"):
+            elif space == "roi":
                 result["roi"] = round_dict(
-                {str(k): v for k, v in self.custom_hyperopt.generate_roi_table(params).items()}, 13
+                    {str(k): v for k, v in self.custom_hyperopt.generate_roi_table(params).items()},
+                    13,
                 )
-        if HyperoptTools.has_space(self.config, "stoploss"):
+            elif space == "stoploss":
                 result["stoploss"] = round_dict(
-                {p.name: params.get(p.name) for p in self.stoploss_space}, 13
+                    {p.name: params.get(p.name) for p in self.spaces[space]}, 13
                 )
-        if HyperoptTools.has_space(self.config, "trailing"):
+            elif space == "trailing":
                 result["trailing"] = round_dict(
                     self.custom_hyperopt.generate_trailing_params(params), 13
                 )
-        if HyperoptTools.has_space(self.config, "trades"):
+            elif space == "trades":
                 result["max_open_trades"] = round_dict(
                     {
                         "max_open_trades": (
@@ -198,6 +190,10 @@ class HyperOptimizer:
                     },
                     13,
                 )
+            else:
+                result[space] = round_dict(
+                    {p.name: params.get(p.name) for p in self.spaces[space]}, 13
+                )
 
         return result
 
@@ -226,56 +222,39 @@ class HyperOptimizer:
         """
         Assign the dimensions in the hyperoptimization space.
         """
-        if HyperoptTools.has_space(self.config, "protection"):
+        spaces = ["buy", "sell", "protection", "roi", "stoploss", "trailing", "trades"]
+        spaces += [s for s in self.custom_hyperopt.get_available_spaces() if s not in spaces]
+
+        for space in spaces:
+            if not HyperoptTools.has_space(self.config, space):
+                continue
+            logger.debug(f"Hyperopt has '{space}' space")
+            if space == "protection":
                 # Protections can only be optimized when using the Parameter interface
-            logger.debug("Hyperopt has 'protection' space")
                 # Enable Protections if protection space is selected.
                 self.config["enable_protections"] = True
                 self.backtesting.enable_protections = True
-            self.protection_space = self.custom_hyperopt.protection_space()
+                self.spaces[space] = self.custom_hyperopt.get_indicator_space(space)
+            elif space == "roi":
+                self.spaces[space] = self.custom_hyperopt.roi_space()
+            elif space == "stoploss":
+                self.spaces[space] = self.custom_hyperopt.stoploss_space()
+            elif space == "trailing":
+                self.spaces[space] = self.custom_hyperopt.trailing_space()
+            elif space == "trades":
+                self.spaces[space] = self.custom_hyperopt.max_open_trades_space()
+            else:
+                self.spaces[space] = self.custom_hyperopt.get_indicator_space(space)
 
-        if HyperoptTools.has_space(self.config, "buy"):
-            logger.debug("Hyperopt has 'buy' space")
-            self.buy_space = self.custom_hyperopt.buy_indicator_space()
-
-        if HyperoptTools.has_space(self.config, "sell"):
-            logger.debug("Hyperopt has 'sell' space")
-            self.sell_space = self.custom_hyperopt.sell_indicator_space()
-
-        if HyperoptTools.has_space(self.config, "roi"):
-            logger.debug("Hyperopt has 'roi' space")
-            self.roi_space = self.custom_hyperopt.roi_space()
-
-        if HyperoptTools.has_space(self.config, "stoploss"):
-            logger.debug("Hyperopt has 'stoploss' space")
-            self.stoploss_space = self.custom_hyperopt.stoploss_space()
-
-        if HyperoptTools.has_space(self.config, "trailing"):
-            logger.debug("Hyperopt has 'trailing' space")
-            self.trailing_space = self.custom_hyperopt.trailing_space()
-
-        if HyperoptTools.has_space(self.config, "trades"):
-            logger.debug("Hyperopt has 'trades' space")
-            self.max_open_trades_space = self.custom_hyperopt.max_open_trades_space()
-
-        self.dimensions = (
-            self.buy_space
-            + self.sell_space
-            + self.protection_space
-            + self.roi_space
-            + self.stoploss_space
-            + self.trailing_space
-            + self.max_open_trades_space
+        self.dimensions = [s for space in self.spaces.values() for s in space]
+        if len(self.dimensions) == 0:
+            raise OperationalException(
+                "No hyperopt parameters found to optimize."
+                f"Available spaces: {', '.join(spaces)}. "
+                "Check your strategy's parameter definitions or verify the configured spaces "
+                "in your command."
             )
-
-    def assign_params(self, params_dict: dict[str, Any], category: str) -> None:
-        """
-        Assign hyperoptable parameters
-        """
-        for attr_name, attr in self.backtesting.strategy.enumerate_parameters(category):
-            if attr.optimize:
-                # noinspection PyProtectedMember
-                attr.value = params_dict[attr_name]
+        self.o_dimensions = self.convert_dimensions_to_optuna_space(self.dimensions)
 
     @delayed
     @wrap_non_picklable_objects
@@ -292,15 +271,9 @@ class HyperOptimizer:
         HyperoptStateContainer.set_state(HyperoptState.OPTIMIZE)
         backtest_start_time = datetime.now(UTC)
 
-        # Apply parameters
-        if HyperoptTools.has_space(self.config, "buy"):
-            self.assign_params(params_dict, "buy")
-
-        if HyperoptTools.has_space(self.config, "sell"):
-            self.assign_params(params_dict, "sell")
-
-        if HyperoptTools.has_space(self.config, "protection"):
-            self.assign_params(params_dict, "protection")
+        for attr_name, attr in self.backtesting.strategy.enumerate_parameters():
+            if attr.in_space and attr.optimize:
+                attr.value = params_dict[attr_name]
 
         if HyperoptTools.has_space(self.config, "roi"):
             self.backtesting.strategy.minimal_roi = self.custom_hyperopt.generate_roi_table(
@@ -436,7 +409,6 @@ class HyperOptimizer:
         o_sampler = self.custom_hyperopt.generate_estimator(
             dimensions=self.dimensions, random_state=random_state
         )
-        self.o_dimensions = self.convert_dimensions_to_optuna_space(self.dimensions)
 
         if isinstance(o_sampler, str):
             if o_sampler not in optuna_samplers_dict.keys():

freqtrade/optimize/hyperopt_tools.py

@@ -9,7 +9,7 @@ import numpy as np
 import rapidjson
 from pandas import isna, json_normalize
 
-from freqtrade.constants import FTHYPT_FILEVERSION, Config
+from freqtrade.constants import FTHYPT_FILEVERSION, HYPEROPT_BUILTIN_SPACES, Config
 from freqtrade.enums import HyperoptState
 from freqtrade.exceptions import OperationalException
 from freqtrade.misc import deep_merge_dicts, round_dict, safe_value_fallback2
@@ -219,20 +219,21 @@ class HyperoptTools:
             print(rapidjson.dumps(result_dict, default=str, number_mode=HYPER_PARAMS_FILE_FORMAT))
 
         else:
-            HyperoptTools._params_pretty_print(
-                params, "buy", "Buy hyperspace params:", non_optimized
+            all_spaces = list(params.keys() | non_optimized.keys())
+            # Explicitly listed to keep original sort order
+            spaces = ["buy", "sell", "protection", "roi", "stoploss", "trailing", "max_open_trades"]
+            spaces += [s for s in all_spaces if s not in spaces]
+            lookup = {
+                "roi": "ROI",
+                "trailing": "Trailing stop",
+            }
+            for space in spaces:
+                name = lookup.get(
+                    space, space.capitalize() if space in HYPEROPT_BUILTIN_SPACES else space
                 )
+
                 HyperoptTools._params_pretty_print(
-                params, "sell", "Sell hyperspace params:", non_optimized
-            )
-            HyperoptTools._params_pretty_print(
-                params, "protection", "Protection hyperspace params:", non_optimized
-            )
-            HyperoptTools._params_pretty_print(params, "roi", "ROI table:", non_optimized)
-            HyperoptTools._params_pretty_print(params, "stoploss", "Stoploss:", non_optimized)
-            HyperoptTools._params_pretty_print(params, "trailing", "Trailing stop:", non_optimized)
-            HyperoptTools._params_pretty_print(
-                params, "max_open_trades", "Max Open Trades:", non_optimized
+                    params, space, f"{name} parameters:", non_optimized
                 )
 
     @staticmethod

freqtrade/strategy/hyper.py

@@ -4,9 +4,9 @@ This module defines a base class for auto-hyperoptable strategies.
 """
 
 import logging
+from collections import defaultdict
 from collections.abc import Iterator
 from pathlib import Path
-from typing import Any
 
 from freqtrade.constants import Config
 from freqtrade.exceptions import OperationalException
@@ -18,6 +18,11 @@ from freqtrade.strategy.parameters import BaseParameter
 logger = logging.getLogger(__name__)
 
 
+# Type aliases
+SpaceParams = dict[str, BaseParameter]
+AllSpaceParams = dict[str, SpaceParams]
+
+
 class HyperStrategyMixin:
     """
     A helper base class which allows HyperOptAuto class to reuse implementations of buy/sell
@@ -29,9 +34,7 @@ class HyperStrategyMixin:
         Initialize hyperoptable strategy mixin.
         """
         self.config = config
-        self.ft_buy_params: list[BaseParameter] = []
-        self.ft_sell_params: list[BaseParameter] = []
-        self.ft_protection_params: list[BaseParameter] = []
+        self._ft_hyper_params: AllSpaceParams = {}
 
         params = self.load_params_from_file()
         params = params.get("params", {})
@@ -46,31 +49,10 @@ class HyperStrategyMixin:
         :param category:
         :return:
         """
-        if category not in ("buy", "sell", "protection", None):
-            raise OperationalException(
-                'Category must be one of: "buy", "sell", "protection", None.'
-            )
-
-        if category is None:
-            params = self.ft_buy_params + self.ft_sell_params + self.ft_protection_params
-        else:
-            params = getattr(self, f"ft_{category}_params")
-
-        for par in params:
+        for category in [c for c in self._ft_hyper_params if category is None or c == category]:
+            for par in self._ft_hyper_params[category].values():
                 yield par.name, par
 
-    @classmethod
-    def detect_all_parameters(cls) -> dict:
-        """Detect all parameters and return them as a list"""
-        params: dict[str, Any] = {
-            "buy": list(detect_parameters(cls, "buy")),
-            "sell": list(detect_parameters(cls, "sell")),
-            "protection": list(detect_parameters(cls, "protection")),
-        }
-        params.update({"count": len(params["buy"] + params["sell"] + params["protection"])})
-
-        return params
-
     def ft_load_params_from_file(self) -> None:
         """
         Load Parameters from parameter file
@@ -110,20 +92,13 @@ class HyperStrategyMixin:
         * Parameters defined in parameters objects (buy_params, sell_params, ...)
         * Parameter defaults
         """
+        self._ft_hyper_params = detect_all_parameters(self)
 
-        buy_params = deep_merge_dicts(
-            self._ft_params_from_file.get("buy", {}), getattr(self, "buy_params", {})
+        for space in self._ft_hyper_params.keys():
+            params_values = deep_merge_dicts(
+                self._ft_params_from_file.get(space, {}), getattr(self, f"{space}_params", {})
             )
-        sell_params = deep_merge_dicts(
-            self._ft_params_from_file.get("sell", {}), getattr(self, "sell_params", {})
-        )
-        protection_params = deep_merge_dicts(
-            self._ft_params_from_file.get("protection", {}), getattr(self, "protection_params", {})
-        )
-
-        self._ft_load_params(buy_params, "buy", hyperopt)
-        self._ft_load_params(sell_params, "sell", hyperopt)
-        self._ft_load_params(protection_params, "protection", hyperopt)
+            self._ft_load_params(self._ft_hyper_params[space], params_values, space, hyperopt)
 
     def load_params_from_file(self) -> dict:
         filename_str = getattr(self, "__file__", "")
@@ -145,72 +120,73 @@ class HyperStrategyMixin:
 
         return {}
 
-    def _ft_load_params(self, params: dict, space: str, hyperopt: bool = False) -> None:
+    def _ft_load_params(
+        self, params: SpaceParams, param_values: dict, space: str, hyperopt: bool = False
+    ) -> None:
         """
         Set optimizable parameter values.
         :param params: Dictionary with new parameter values.
         """
-        if not params:
+        if not param_values:
             logger.info(f"No params for {space} found, using default values.")
-        param_container: list[BaseParameter] = getattr(self, f"ft_{space}_params")
 
-        for attr_name, attr in detect_parameters(self, space):
-            attr.name = attr_name
-            attr.in_space = hyperopt and HyperoptTools.has_space(self.config, space)
-            if not attr.category:
-                attr.category = space
+        for param_name, param in params.items():
+            param.in_space = hyperopt and HyperoptTools.has_space(self.config, space)
+            if not param.category:
+                param.category = space
 
-            param_container.append(attr)
-
-            if params and attr_name in params:
-                if attr.load:
-                    attr.value = params[attr_name]
-                    logger.info(f"Strategy Parameter: {attr_name} = {attr.value}")
+            if param_values and param_name in param_values:
+                if param.load:
+                    param.value = param_values[param_name]
+                    logger.info(f"Strategy Parameter: {param_name} = {param.value}")
                 else:
                     logger.warning(
-                        f'Parameter "{attr_name}" exists, but is disabled. '
-                        f'Default value "{attr.value}" used.'
+                        f'Parameter "{param_name}" exists, but is disabled. '
+                        f'Default value "{param.value}" used.'
                     )
             else:
-                logger.info(f"Strategy Parameter(default): {attr_name} = {attr.value}")
+                logger.info(f"Strategy Parameter(default): {param_name} = {param.value}")
 
     def get_no_optimize_params(self) -> dict[str, dict]:
         """
         Returns list of Parameters that are not part of the current optimize job
         """
-        params: dict[str, dict] = {
-            "buy": {},
-            "sell": {},
-            "protection": {},
-        }
+        params: dict[str, dict] = defaultdict(dict)
         for name, p in self.enumerate_parameters():
             if p.category and (not p.optimize or not p.in_space):
                 params[p.category][name] = p.value
         return params
 
 
-def detect_parameters(
-    obj: HyperStrategyMixin | type[HyperStrategyMixin], category: str
-) -> Iterator[tuple[str, BaseParameter]]:
+def detect_all_parameters(
+    obj: HyperStrategyMixin | type[HyperStrategyMixin],
+) -> AllSpaceParams:
     """
-    Detect all parameters for 'category' for "obj"
+    Detect all hyperoptable parameters for this object.
     :param obj: Strategy object or class
-    :param category: category - usually `'buy', 'sell', 'protection',...
+    :return: Dictionary of detected parameters by space
     """
+    auto_categories = ["buy", "sell", "enter", "exit", "protection"]
+    result: AllSpaceParams = defaultdict(dict)
     for attr_name in dir(obj):
-        if not attr_name.startswith("__"):  # Ignore internals, not strictly necessary.
+        if attr_name.startswith("__"):  # Ignore internals
+            continue
         attr = getattr(obj, attr_name)
-            if issubclass(attr.__class__, BaseParameter):
-                if (
-                    attr_name.startswith(category + "_")
-                    and attr.category is not None
-                    and attr.category != category
-                ):
-                    raise OperationalException(
-                        f"Inconclusive parameter name {attr_name}, category: {attr.category}."
-                    )
+        if not issubclass(attr.__class__, BaseParameter):
+            continue
+        if not attr.category:
+            # Category auto detection
+            for category in auto_categories:
+                if attr_name.startswith(category + "_"):
+                    attr.category = category
+                    break
+        if attr.category is None:
+            raise OperationalException(f"Cannot determine parameter space for {attr_name}.")
 
-                if category == attr.category or (
-                    attr_name.startswith(category + "_") and attr.category is None
-                ):
-                    yield attr_name, attr
+        if attr.category in ("all", "default") or attr.category.isidentifier() is False:
+            raise OperationalException(
+                f"'{attr.category}' is not a valid space. Parameter: {attr_name}."
+            )
+        attr.name = attr_name
+        result[attr.category][attr_name] = attr
+    return result

freqtrade/strategy/parameters.py

@@ -49,9 +49,9 @@ class BaseParameter(ABC):
     ):
         """
         Initialize hyperopt-optimizable parameter.
-        :param space: A parameter category. Can be 'buy' or 'sell'. This parameter is optional if
-         parameter field
-         name is prefixed with 'buy_' or 'sell_'.
+        :param space: The parameter space. Can be 'buy', 'sell', or a string that's also a
+                valid python identifier.
+                This parameter is optional if parameter name is prefixed with 'buy_' or 'sell_'.
         :param optimize: Include parameter in hyperopt optimizations.
         :param load: Load parameter value from {space}_params.
         :param kwargs: Extra parameters to optuna.distributions.
@@ -109,8 +109,9 @@ class NumericParameter(BaseParameter):
         :param high: Upper end (inclusive) of optimization space.
                      Must be none of entire range is passed first parameter.
         :param default: A default value.
-        :param space: A parameter category. Can be 'buy' or 'sell'. This parameter is optional if
-                      parameter fieldname is prefixed with 'buy_' or 'sell_'.
+        :param space: The parameter space. Can be 'buy', 'sell', or a string that's also a
+                valid python identifier.
+                This parameter is optional if parameter name is prefixed with 'buy_' or 'sell_'.
         :param optimize: Include parameter in hyperopt optimizations.
         :param load: Load parameter value from {space}_params.
         :param kwargs: Extra parameters to optuna.distributions.*.
@@ -151,8 +152,9 @@ class IntParameter(NumericParameter):
         :param high: Upper end (inclusive) of optimization space.
                      Must be none of entire range is passed first parameter.
         :param default: A default value.
-        :param space: A parameter category. Can be 'buy' or 'sell'. This parameter is optional if
-                      parameter fieldname is prefixed with 'buy_' or 'sell_'.
+        :param space: The parameter space. Can be 'buy', 'sell', or a string that's also a
+                valid python identifier.
+                This parameter is optional if parameter name is prefixed with 'buy_' or 'sell_'.
         :param optimize: Include parameter in hyperopt optimizations.
         :param load: Load parameter value from {space}_params.
         :param kwargs: Extra parameters to optuna.distributions.IntDistribution.
@@ -205,8 +207,9 @@ class RealParameter(NumericParameter):
         :param high: Upper end (inclusive) of optimization space.
                      Must be none if entire range is passed first parameter.
         :param default: A default value.
-        :param space: A parameter category. Can be 'buy' or 'sell'. This parameter is optional if
-                      parameter fieldname is prefixed with 'buy_' or 'sell_'.
+        :param space: The parameter space. Can be 'buy', 'sell', or a string that's also a
+                valid python identifier.
+                This parameter is optional if parameter name is prefixed with 'buy_' or 'sell_'.
         :param optimize: Include parameter in hyperopt optimizations.
         :param load: Load parameter value from {space}_params.
         :param kwargs: Extra parameters to optuna.distributions.FloatDistribution.
@@ -245,8 +248,9 @@ class DecimalParameter(NumericParameter):
                      Must be none if entire range is passed first parameter.
         :param default: A default value.
         :param decimals: A number of decimals after floating point to be included in testing.
-        :param space: A parameter category. Can be 'buy' or 'sell'. This parameter is optional if
-                      parameter fieldname is prefixed with 'buy_' or 'sell_'.
+        :param space: The parameter space. Can be 'buy', 'sell', or a string that's also a
+                valid python identifier.
+                This parameter is optional if parameter name is prefixed with 'buy_' or 'sell_'.
         :param optimize: Include parameter in hyperopt optimizations.
         :param load: Load parameter value from {space}_params.
         :param kwargs: Extra parameters to optuna's NumericParameter.
@@ -311,9 +315,9 @@ class CategoricalParameter(BaseParameter):
         :param categories: Optimization space, [a, b, ...].
         :param default: A default value. If not specified, first item from specified space will be
                 used.
-        :param space: A parameter category. Can be 'buy' or 'sell'. This parameter is optional if
-         parameter field
-         name is prefixed with 'buy_' or 'sell_'.
+        :param space: The parameter space. Can be 'buy', 'sell', or a string that's also a
+                valid python identifier.
+                This parameter is optional if parameter name is prefixed with 'buy_' or 'sell_'.
         :param optimize: Include parameter in hyperopt optimizations.
         :param load: Load parameter value from {space}_params.
         :param kwargs: Compatibility. Optuna's CategoricalDistribution does not
@@ -362,9 +366,9 @@ class BooleanParameter(CategoricalParameter):
         It's a shortcut to `CategoricalParameter([True, False])`.
         :param default: A default value. If not specified, first item from specified space will be
                 used.
-        :param space: A parameter category. Can be 'buy' or 'sell'. This parameter is optional if
-         parameter field
-         name is prefixed with 'buy_' or 'sell_'.
+        :param space: The parameter space. Can be 'buy', 'sell', or a string that's also a
+                valid python identifier.
+                This parameter is optional if parameter name is prefixed with 'buy_' or 'sell_'.
         :param optimize: Include parameter in hyperopt optimizations.
         :param load: Load parameter value from {space}_params.
         :param kwargs: Extra parameters to optuna.distributions.CategoricalDistribution.

freqtrade/templates/sample_strategy.py

@@ -96,7 +96,9 @@ class SampleStrategy(IStrategy):
     buy_rsi = IntParameter(low=1, high=50, default=30, space="buy", optimize=True, load=True)
     sell_rsi = IntParameter(low=50, high=100, default=70, space="sell", optimize=True, load=True)
     short_rsi = IntParameter(low=51, high=100, default=70, space="sell", optimize=True, load=True)
-    exit_short_rsi = IntParameter(low=1, high=50, default=30, space="buy", optimize=True, load=True)
+    exit_short_rsi = IntParameter(
+        low=1, high=50, default=30, space="exit", optimize=True, load=True
+    )
 
     # Number of candles the strategy requires before producing valid signals
     startup_candle_count: int = 200

tests/commands/test_commands.py

@@ -1319,10 +1319,10 @@ def test_hyperopt_list(mocker, capsys, caplog, tmp_path):
             " 2/12",
             " 10/12",
             "Best result:",
-            "Buy hyperspace params",
-            "Sell hyperspace params",
-            "ROI table",
-            "Stoploss",
+            "Buy parameters",
+            "Sell parameters",
+            "ROI parameters",
+            "Stoploss parameters",
         ]
     )
     assert all(

tests/optimize/test_hyperopt.py

@@ -501,7 +501,7 @@ def test_populate_indicators(hyperopt, testdatadir) -> None:
 def test_generate_optimizer(mocker, hyperopt_conf) -> None:
     hyperopt_conf.update(
         {
-            "spaces": "all",
+            "spaces": ["all"],
             "hyperopt_min_trades": 1,
         }
     )
@@ -569,6 +569,8 @@ def test_generate_optimizer(mocker, hyperopt_conf) -> None:
         "buy_rsi": 35,
         "sell_minusdi": 0.02,
         "sell_rsi": 75,
+        "exit_rsi": 7,
+        "exitaaa": 7,
         "protection_cooldown_lookback": 20,
         "protection_enabled": True,
         "roi_t1": 60.0,
@@ -597,6 +599,12 @@ def test_generate_optimizer(mocker, hyperopt_conf) -> None:
                 "buy_plusdi": 0.02,
                 "buy_rsi": 35,
             },
+            "exitaspace": {
+                "exitaaa": 7,
+            },
+            "exit": {
+                "exit_rsi": 7,
+            },
             "roi": {"0": 0.12, "20.0": 0.02, "50.0": 0.01, "110.0": 0},
             "protection": {
                 "protection_cooldown_lookback": 20,
@@ -616,7 +624,7 @@ def test_generate_optimizer(mocker, hyperopt_conf) -> None:
             "max_open_trades": {"max_open_trades": 3},
         },
         "params_dict": optimizer_param,
-        "params_not_optimized": {"buy": {}, "protection": {}, "sell": {}},
+        "params_not_optimized": {},
         "results_metrics": ANY,
         "total_profit": 3.1e-08,
     }
@@ -906,14 +914,43 @@ def test_simplified_interface_all_failed(mocker, hyperopt_conf, caplog) -> None:
     hyperopt.hyperopter.backtesting.strategy.advise_all_indicators = MagicMock()
     hyperopt.hyperopter.custom_hyperopt.generate_roi_table = MagicMock(return_value={})
 
-    with pytest.raises(OperationalException, match=r"The 'protection' space is included into *"):
+    # The first one to fail raises the exception
+    with pytest.raises(OperationalException, match=r"The 'buy' space is included into *"):
         hyperopt.hyperopter.init_spaces()
 
     hyperopt.config["hyperopt_ignore_missing_space"] = True
     caplog.clear()
     hyperopt.hyperopter.init_spaces()
     assert log_has_re(r"The 'protection' space is included into *", caplog)
-    assert hyperopt.hyperopter.protection_space == []
+    assert hyperopt.hyperopter.spaces["protection"] == []
+
+
+def test_simplified_interface_none_selected(mocker, hyperopt_conf, caplog) -> None:
+    mocker.patch("freqtrade.optimize.hyperopt.hyperopt_optimizer.dump", MagicMock())
+    mocker.patch("freqtrade.optimize.hyperopt.hyperopt.file_dump_json")
+    mocker.patch(
+        "freqtrade.optimize.backtesting.Backtesting.load_bt_data",
+        MagicMock(return_value=(MagicMock(), None)),
+    )
+    mocker.patch(
+        "freqtrade.optimize.hyperopt.hyperopt_optimizer.get_timerange",
+        MagicMock(return_value=(datetime(2017, 12, 10), datetime(2017, 12, 13))),
+    )
+
+    patch_exchange(mocker)
+
+    hyperopt_conf.update(
+        {
+            "spaces": [],
+        }
+    )
+
+    hyperopt = Hyperopt(hyperopt_conf)
+    hyperopt.hyperopter.backtesting.strategy.advise_all_indicators = MagicMock()
+    hyperopt.hyperopter.custom_hyperopt.generate_roi_table = MagicMock(return_value={})
+
+    with pytest.raises(OperationalException, match=r"No hyperopt parameters found to optimize\..*"):
+        hyperopt.hyperopter.init_spaces()
 
 
 def test_simplified_interface_buy(mocker, hyperopt_conf, capsys) -> None:

tests/optimize/test_hyperopt_tools.py

@@ -296,14 +296,14 @@ def test_show_epoch_details(capsys):
 
     HyperoptTools.show_epoch_details(test_result, 5, False, no_header=True)
     captured = capsys.readouterr()
-    assert "# Trailing stop:" in captured.out
+    assert "# Trailing stop parameters:" in captured.out
     # re.match(r"Pairs for .*", captured.out)
     assert re.search(r"^\s+trailing_stop = True$", captured.out, re.MULTILINE)
     assert re.search(r"^\s+trailing_stop_positive = 0.02$", captured.out, re.MULTILINE)
     assert re.search(r"^\s+trailing_stop_positive_offset = 0.04$", captured.out, re.MULTILINE)
     assert re.search(r"^\s+trailing_only_offset_is_reached = True$", captured.out, re.MULTILINE)
 
-    assert "# ROI table:" in captured.out
+    assert "# ROI parameters:" in captured.out
     assert re.search(r"^\s+minimal_roi = \{$", captured.out, re.MULTILINE)
     assert re.search(r"^\s+\"90\"\:\s0.14,\s*$", captured.out, re.MULTILINE)
 

tests/strategy/strats/hyperoptable_strategy.py

@@ -35,6 +35,9 @@ class HyperoptableStrategy(StrategyTestV3):
     sell_minusdi = DecimalParameter(
         low=0, high=1, default=0.5001, decimals=3, space="sell", load=False
     )
+    exitaaa = IntParameter(low=0, high=10, default=5, space="exitaspace")
+
+    exit_rsi = IntParameter(low=0, high=10, default=5)
     protection_enabled = BooleanParameter(default=True)
     protection_cooldown_lookback = IntParameter([0, 50], default=30)
 

tests/strategy/test_interface.py

@@ -16,7 +16,7 @@ from freqtrade.enums import ExitCheckTuple, ExitType, SignalDirection
 from freqtrade.exceptions import OperationalException, StrategyError
 from freqtrade.persistence import PairLocks, Trade
 from freqtrade.resolvers import StrategyResolver
-from freqtrade.strategy.hyper import detect_parameters
+from freqtrade.strategy.hyper import detect_all_parameters
 from freqtrade.strategy.parameters import (
     IntParameter,
 )
@@ -928,8 +928,7 @@ def test_auto_hyperopt_interface(default_conf):
     PairLocks.timeframe = default_conf["timeframe"]
     strategy = StrategyResolver.load_strategy(default_conf)
     strategy.ft_bot_start()
-    with pytest.raises(OperationalException):
-        next(strategy.enumerate_parameters("deadBeef"))
+    assert list(strategy.enumerate_parameters("deadBeef")) == []
 
     assert strategy.buy_rsi.value == strategy.buy_params["buy_rsi"]
     # PlusDI is NOT in the buy-params, so default should be used
@@ -940,20 +939,52 @@ def test_auto_hyperopt_interface(default_conf):
 
     # Parameter is disabled - so value from sell_param dict will NOT be used.
     assert strategy.sell_minusdi.value == 0.5
-    all_params = strategy.detect_all_parameters()
+    all_params = detect_all_parameters(strategy.__class__)
     assert isinstance(all_params, dict)
     # Only one buy param at class level
     assert len(all_params["buy"]) == 1
     # Running detect params at instance level reveals both parameters.
-    assert len(list(detect_parameters(strategy, "buy"))) == 2
-    assert len(all_params["sell"]) == 2
-    # Number of Hyperoptable parameters
-    assert all_params["count"] == 5
+    params_inst = detect_all_parameters(strategy)
+    assert len(params_inst["buy"]) == 2
+    assert len(params_inst["sell"]) == 2
 
     strategy.__class__.sell_rsi = IntParameter([0, 10], default=5, space="buy")
 
-    with pytest.raises(OperationalException, match=r"Inconclusive parameter.*"):
-        [x for x in detect_parameters(strategy, "sell")]
+    spaces = detect_all_parameters(strategy.__class__)
+    assert "buy" in spaces
+    assert spaces["buy"]["sell_rsi"] == strategy.sell_rsi
+    del strategy.__class__.sell_rsi
+
+    strategy.__class__.exit22_rsi = IntParameter([0, 10], default=5)
+
+    with pytest.raises(
+        OperationalException, match=r"Cannot determine parameter space for exit22_rsi\."
+    ):
+        detect_all_parameters(strategy.__class__)
+
+    # Invalid parameter space
+    strategy.__class__.exit22_rsi = IntParameter([0, 10], default=5, space="all")
+    with pytest.raises(
+        OperationalException, match=r"'all' is not a valid space\. Parameter: exit22_rsi\."
+    ):
+        detect_all_parameters(strategy.__class__)
+
+    strategy.__class__.exit22_rsi = IntParameter([0, 10], default=5, space="hello:world:22")
+    with pytest.raises(
+        OperationalException,
+        match=r"'hello:world:22' is not a valid space\. Parameter: exit22_rsi\.",
+    ):
+        detect_all_parameters(strategy.__class__)
+    del strategy.__class__.exit22_rsi
+
+    # Valid exit parameter
+    strategy.__class__.exit_rsi = IntParameter([0, 10], default=5)
+    strategy.__class__.enter_rsi = IntParameter([0, 10], default=5)
+    spaces = detect_all_parameters(strategy.__class__)
+    assert "exit" in spaces
+    assert "enter" in spaces
+    del strategy.__class__.exit_rsi
+    del strategy.__class__.enter_rsi
 
 
 def test_auto_hyperopt_interface_loadparams(default_conf, mocker, caplog):