convert bash scripts to python scripts

scripts/start-mongodb.py

@@ -0,0 +1,21 @@
+#!/usr/bin/env python3
+
+import os
+import subprocess
+
+
+DB_PATH = os.path.join(
+    os.path.sep,
+    os.path.abspath(os.path.dirname(__file__)),
+    '..', '.hyperopt', 'mongodb'
+)
+if not os.path.exists(DB_PATH):
+    os.makedirs(DB_PATH)
+
+subprocess.Popen([
+    'mongod',
+    '--bind_ip=127.0.0.1',
+    '--port=1234',
+    '--nohttpinterface',
+    '--dbpath={}'.format(DB_PATH),
+]).wait()