prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  --help produces traceback
  Seems I broke it somehow.
  
  `python3 freqtrade hyperopt --help`
  produces traceback 
  ```
  Fatal exception!
  Traceback (most recent call last):
    File "/home/user/freqtrade-wrk/github-hroff-1902/freqtrade/freqtrade/main.py", line 42, in main
      args: Namespace = arguments.get_parsed_arg()
    File "/home/user/freqtrade-wrk/github-hroff-1902/freqtrade/freqtrade/arguments.py", line 46, in get_parsed_arg
      self.parsed_arg = self.parse_args()
    File "/home/user/freqtrade-wrk/github-hroff-1902/freqtrade/freqtrade/arguments.py", line 54, in parse_args
      parsed_arg = self.parser.parse_args(self.args)
    File "/usr/lib/python3.6/argparse.py", line 1743, in parse_args
      args, argv = self.parse_known_args(args, namespace)
    File "/usr/lib/python3.6/argparse.py", line 1775, in parse_known_args
      namespace, args = self._parse_known_args(args, namespace)
    File "/usr/lib/python3.6/argparse.py", line 1963, in _parse_known_args
      positionals_end_index = consume_positionals(start_index)
    File "/usr/lib/python3.6/argparse.py", line 1940, in consume_positionals
      take_action(action, args)
    File "/usr/lib/python3.6/argparse.py", line 1849, in take_action
      action(self, namespace, argument_values, option_string)
    File "/usr/lib/python3.6/argparse.py", line 1146, in __call__
      subnamespace, arg_strings = parser.parse_known_args(arg_strings, None)
    File "/usr/lib/python3.6/argparse.py", line 1775, in parse_known_args
      namespace, args = self._parse_known_args(args, namespace)
    File "/usr/lib/python3.6/argparse.py", line 1981, in _parse_known_args
      start_index = consume_optional(start_index)
    File "/usr/lib/python3.6/argparse.py", line 1921, in consume_optional
      take_action(action, args, option_string)
    File "/usr/lib/python3.6/argparse.py", line 1849, in take_action
      action(self, namespace, argument_values, option_string)
    File "/usr/lib/python3.6/argparse.py", line 1034, in __call__
      parser.exit()
    File "/usr/lib/python3.6/argparse.py", line 2389, in exit
      _sys.exit(status)
  SystemExit: 0
  ```
  
  
  </issue>
  <code>
  [start of freqtrade/main.py]
  1 #!/usr/bin/env python3
  2 """
  3 Main Freqtrade bot script.
  4 Read the documentation to know what cli arguments you need.
  5 """
  6 
  7 import sys
  8 # check min. python version
  9 if sys.version_info < (3, 6):
  10     sys.exit("Freqtrade requires Python version >= 3.6")
  11 
  12 # flake8: noqa E402
  13 import logging
  14 from argparse import Namespace
  15 from typing import List
  16 
  17 from freqtrade import OperationalException
  18 from freqtrade.arguments import Arguments
  19 from freqtrade.configuration import set_loggers
  20 from freqtrade.worker import Worker
  21 
  22 
  23 logger = logging.getLogger('freqtrade')
  24 
  25 
  26 def main(sysargv: List[str] = None) -> None:
  27     """
  28     This function will initiate the bot and start the trading loop.
  29     :return: None
  30     """
  31 
  32     try:
  33         set_loggers()
  34 
  35         worker = None
  36         return_code = 1
  37 
  38         arguments = Arguments(
  39             sysargv,
  40             'Free, open source crypto trading bot'
  41         )
  42         args: Namespace = arguments.get_parsed_arg()
  43 
  44         # A subcommand has been issued.
  45         # Means if Backtesting or Hyperopt have been called we exit the bot
  46         if hasattr(args, 'func'):
  47             args.func(args)
  48             # TODO: fetch return_code as returned by the command function here
  49             return_code = 0
  50         else:
  51             # Load and run worker
  52             worker = Worker(args)
  53             worker.run()
  54 
  55     except KeyboardInterrupt:
  56         logger.info('SIGINT received, aborting ...')
  57         return_code = 0
  58     except OperationalException as e:
  59         logger.error(str(e))
  60         return_code = 2
  61     except BaseException:
  62         logger.exception('Fatal exception!')
  63     finally:
  64         if worker:
  65             worker.exit()
  66         sys.exit(return_code)
  67 
  68 
  69 if __name__ == '__main__':
  70     main()
  71
  [end of freqtrade/main.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/freqtrade/main.py b/freqtrade/main.py
  --- a/freqtrade/main.py
  +++ b/freqtrade/main.py
  @@ -12,7 +12,7 @@
   # flake8: noqa E402
   import logging
   from argparse import Namespace
  -from typing import List
  +from typing import Any, List
   
   from freqtrade import OperationalException
   from freqtrade.arguments import Arguments
  @@ -29,12 +29,11 @@
       :return: None
       """
   
  +    return_code: Any = 1
  +    worker = None
       try:
           set_loggers()
   
  -        worker = None
  -        return_code = 1
  -
           arguments = Arguments(
               sysargv,
               'Free, open source crypto trading bot'
  @@ -52,13 +51,15 @@
               worker = Worker(args)
               worker.run()
   
  +    except SystemExit as e:
  +        return_code = e
       except KeyboardInterrupt:
           logger.info('SIGINT received, aborting ...')
           return_code = 0
       except OperationalException as e:
           logger.error(str(e))
           return_code = 2
  -    except BaseException:
  +    except Exception:
           logger.exception('Fatal exception!')
       finally:
           if worker:
  
verification_info: {"golden_diff": "diff --git a/freqtrade/main.py b/freqtrade/main.py\n--- a/freqtrade/main.py\n+++ b/freqtrade/main.py\n@@ -12,7 +12,7 @@\n # flake8: noqa E402\n import logging\n from argparse import Namespace\n-from typing import List\n+from typing import Any, List\n \n from freqtrade import OperationalException\n from freqtrade.arguments import Arguments\n@@ -29,12 +29,11 @@\n     :return: None\n     \"\"\"\n \n+    return_code: Any = 1\n+    worker = None\n     try:\n         set_loggers()\n \n-        worker = None\n-        return_code = 1\n-\n         arguments = Arguments(\n             sysargv,\n             'Free, open source crypto trading bot'\n@@ -52,13 +51,15 @@\n             worker = Worker(args)\n             worker.run()\n \n+    except SystemExit as e:\n+        return_code = e\n     except KeyboardInterrupt:\n         logger.info('SIGINT received, aborting ...')\n         return_code = 0\n     except OperationalException as e:\n         logger.error(str(e))\n         return_code = 2\n-    except BaseException:\n+    except Exception:\n         logger.exception('Fatal exception!')\n     finally:\n         if worker:\n", "issue": "--help produces traceback\nSeems I broke it somehow.\r\n\r\n`python3 freqtrade hyperopt --help`\r\nproduces traceback \r\n```\r\nFatal exception!\r\nTraceback (most recent call last):\r\n  File \"/home/user/freqtrade-wrk/github-hroff-1902/freqtrade/freqtrade/main.py\", line 42, in main\r\n    args: Namespace = arguments.get_parsed_arg()\r\n  File \"/home/user/freqtrade-wrk/github-hroff-1902/freqtrade/freqtrade/arguments.py\", line 46, in get_parsed_arg\r\n    self.parsed_arg = self.parse_args()\r\n  File \"/home/user/freqtrade-wrk/github-hroff-1902/freqtrade/freqtrade/arguments.py\", line 54, in parse_args\r\n    parsed_arg = self.parser.parse_args(self.args)\r\n  File \"/usr/lib/python3.6/argparse.py\", line 1743, in parse_args\r\n    args, argv = self.parse_known_args(args, namespace)\r\n  File \"/usr/lib/python3.6/argparse.py\", line 1775, in parse_known_args\r\n    namespace, args = self._parse_known_args(args, namespace)\r\n  File \"/usr/lib/python3.6/argparse.py\", line 1963, in _parse_known_args\r\n    positionals_end_index = consume_positionals(start_index)\r\n  File \"/usr/lib/python3.6/argparse.py\", line 1940, in consume_positionals\r\n    take_action(action, args)\r\n  File \"/usr/lib/python3.6/argparse.py\", line 1849, in take_action\r\n    action(self, namespace, argument_values, option_string)\r\n  File \"/usr/lib/python3.6/argparse.py\", line 1146, in __call__\r\n    subnamespace, arg_strings = parser.parse_known_args(arg_strings, None)\r\n  File \"/usr/lib/python3.6/argparse.py\", line 1775, in parse_known_args\r\n    namespace, args = self._parse_known_args(args, namespace)\r\n  File \"/usr/lib/python3.6/argparse.py\", line 1981, in _parse_known_args\r\n    start_index = consume_optional(start_index)\r\n  File \"/usr/lib/python3.6/argparse.py\", line 1921, in consume_optional\r\n    take_action(action, args, option_string)\r\n  File \"/usr/lib/python3.6/argparse.py\", line 1849, in take_action\r\n    action(self, namespace, argument_values, option_string)\r\n  File \"/usr/lib/python3.6/argparse.py\", line 1034, in __call__\r\n    parser.exit()\r\n  File \"/usr/lib/python3.6/argparse.py\", line 2389, in exit\r\n    _sys.exit(status)\r\nSystemExit: 0\r\n```\r\n\n", "before_files": [{"content": "#!/usr/bin/env python3\n\"\"\"\nMain Freqtrade bot script.\nRead the documentation to know what cli arguments you need.\n\"\"\"\n\nimport sys\n# check min. python version\nif sys.version_info < (3, 6):\n    sys.exit(\"Freqtrade requires Python version >= 3.6\")\n\n# flake8: noqa E402\nimport logging\nfrom argparse import Namespace\nfrom typing import List\n\nfrom freqtrade import OperationalException\nfrom freqtrade.arguments import Arguments\nfrom freqtrade.configuration import set_loggers\nfrom freqtrade.worker import Worker\n\n\nlogger = logging.getLogger('freqtrade')\n\n\ndef main(sysargv: List[str] = None) -> None:\n    \"\"\"\n    This function will initiate the bot and start the trading loop.\n    :return: None\n    \"\"\"\n\n    try:\n        set_loggers()\n\n        worker = None\n        return_code = 1\n\n        arguments = Arguments(\n            sysargv,\n            'Free, open source crypto trading bot'\n        )\n        args: Namespace = arguments.get_parsed_arg()\n\n        # A subcommand has been issued.\n        # Means if Backtesting or Hyperopt have been called we exit the bot\n        if hasattr(args, 'func'):\n            args.func(args)\n            # TODO: fetch return_code as returned by the command function here\n            return_code = 0\n        else:\n            # Load and run worker\n            worker = Worker(args)\n            worker.run()\n\n    except KeyboardInterrupt:\n        logger.info('SIGINT received, aborting ...')\n        return_code = 0\n    except OperationalException as e:\n        logger.error(str(e))\n        return_code = 2\n    except BaseException:\n        logger.exception('Fatal exception!')\n    finally:\n        if worker:\n            worker.exit()\n        sys.exit(return_code)\n\n\nif __name__ == '__main__':\n    main()\n", "path": "freqtrade/main.py"}]}