prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  NameError: name 'io' is not defined
  ## 🐛 Bug
  
  I am trying to run my scripts on GPU notebook, and I keep getting the following error.
  
  ```shell
  Traceback (most recent call last):
    File "/opt/conda/lib/python3.10/site-packages/wandb/sdk/wandb_init.py", line 1172, in init
      getcaller()
    File "/opt/conda/lib/python3.10/site-packages/wandb/sdk/wandb_init.py", line 846, in getcaller
      src, line, func, stack = logger.findCaller(stack_info=True)
    File "/root/.local/lib/python3.10/site-packages/log.py", line 42, in findCaller
      sio = io.StringIO()
  NameError: name 'io' is not defined
  ```
  
  In addition, I found that there is no import `io` package in [this](https://github.com/Kaggle/docker-python/blob/main/patches/log.py) code.
  
  ### To Reproduce 
  
  ### Expected behavior
  
  ### Additional context
  
  <!-- Add any other context about the problem here. -->
  
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `patches/log.py`
  Content:
  ```
  1 import logging
  2 import os
  3 
  4 import google.auth
  5 
  6 
  7 _LOG_TO_FILE_ENV = os.getenv("KAGGLE_LOG_TO_FILE")
  8 
  9 
  10 class _LogFormatter(logging.Formatter):
  11     """A logging formatter which truncates long messages."""
  12 
  13     _MAX_LOG_LENGTH = 10000  # Be generous, not to truncate long backtraces.
  14 
  15     def format(self, record):
  16         msg = super(_LogFormatter, self).format(record)
  17         return msg[:_LogFormatter._MAX_LOG_LENGTH] if msg else msg
  18 
  19 # TODO(vimota): Clean this up once we're using python 3.8 and can use
  20 # (https://github.com/python/cpython/commit/dde9fdbe453925279ac3d2a6a72102f6f9ef247c)
  21 # Right now, making the logging module display the intended frame's information
  22 # when the logging calls (info, warn, ...) are wrapped (as is the case in our
  23 # Log class) involves fragile logic.
  24 class _Logger(logging.Logger):
  25 
  26     # This is a copy of logging.Logger.findCaller with the filename ignore
  27     # set expanded to include the current filename (".../log.py").
  28     # Copyright 2001-2015 by Vinay Sajip. All Rights Reserved.
  29     # License: https://github.com/python/cpython/blob/ce9e62544571e7ade7186697d5dd065fb4c5243f/LICENSE
  30     def findCaller(self, stack_info=False, stacklevel=1):
  31         f = logging.currentframe()
  32         f = f.f_back
  33         rv = "(unknown file)", 0, "(unknown function)", None
  34         while hasattr(f, "f_code"):
  35             co = f.f_code
  36             filename = os.path.normcase(co.co_filename)
  37             if filename in _ignore_srcfiles:
  38                 f = f.f_back
  39                 continue
  40             sinfo = None
  41             if stack_info:
  42                 sio = io.StringIO()
  43                 sio.write('Stack (most recent call last):\n')
  44                 traceback.print_stack(f, file=sio)
  45                 sinfo = sio.getvalue()
  46                 if sinfo[-1] == '\n':
  47                     sinfo = sinfo[:-1]
  48                 sio.close()
  49             rv = (co.co_filename, f.f_lineno, co.co_name, sinfo)
  50             break
  51         return rv
  52 
  53 
  54 _srcfile = os.path.normcase(_Logger.findCaller.__code__.co_filename)
  55 _ignore_srcfiles = (_srcfile, logging._srcfile)
  56 
  57 class Log:
  58     """ Helper aggregate for all things related to logging activity. """
  59 
  60     _GLOBAL_LOG = logging.getLogger("")
  61     _initialized = False
  62 
  63     # These are convenience helpers. For performance, consider saving Log.get_logger() and using that
  64     @staticmethod
  65     def critical(msg, *args, **kwargs):
  66         Log._GLOBAL_LOG.critical(msg, *args, **kwargs)
  67 
  68     @staticmethod
  69     def fatal(msg, *args, **kwargs):
  70         Log._GLOBAL_LOG.fatal(msg, *args, **kwargs)
  71 
  72     @staticmethod
  73     def exception(msg, *args, **kwargs):
  74         Log._GLOBAL_LOG.exception(msg, *args, **kwargs)
  75 
  76     @staticmethod
  77     def error(msg, *args, **kwargs):
  78         Log._GLOBAL_LOG.error(msg, *args, **kwargs)
  79 
  80     @staticmethod
  81     def warn(msg, *args, **kwargs):
  82         Log._GLOBAL_LOG.warn(msg, *args, **kwargs)
  83 
  84     @staticmethod
  85     def warning(msg, *args, **kwargs):
  86         Log._GLOBAL_LOG.warning(msg, *args, **kwargs)
  87 
  88     @staticmethod
  89     def debug(msg, *args, **kwargs):
  90         Log._GLOBAL_LOG.debug(msg, *args, **kwargs)
  91 
  92     @staticmethod
  93     def info(msg, *args, **kwargs):
  94         Log._GLOBAL_LOG.info(msg, *args, **kwargs)
  95 
  96     @staticmethod
  97     def set_level(loglevel):
  98         if isinstance(loglevel, int):
  99             Log._GLOBAL_LOG.setLevel(loglevel)
  100             return
  101         elif isinstance(loglevel, str):
  102             # idea from https://docs.python.org/3.5/howto/logging.html#logging-to-a-file
  103             numeric_level = getattr(logging, loglevel.upper(), None)
  104             if isinstance(numeric_level, int):
  105                 Log._GLOBAL_LOG.setLevel(numeric_level)
  106                 return
  107 
  108         raise ValueError('Invalid log level: %s' % loglevel)
  109 
  110     @staticmethod
  111     def _static_init():
  112         if Log._initialized:
  113             return
  114 
  115         logging.setLoggerClass(_Logger)
  116         # The root logger's type is unfortunately (and surprisingly) not affected by
  117         # `setLoggerClass`. Monkey patch it instead. TODO(vimota): Remove this, see the TODO
  118         # associated with _Logger.
  119         logging.RootLogger.findCaller = _Logger.findCaller
  120         log_to_file = _LOG_TO_FILE_ENV.lower() in ("yes", "true", "t", "1") if _LOG_TO_FILE_ENV is not None else True
  121         if log_to_file:
  122             handler = logging.FileHandler(filename='/tmp/kaggle.log', mode='w')
  123         else:
  124             handler = logging.StreamHandler()
  125         
  126         # ".1s" is for the first letter: http://stackoverflow.com/a/27453084/1869.
  127         format_string = "%(asctime)s %(levelname).1s %(process)d %(filename)s:%(lineno)d] %(message)s"
  128         handler.setFormatter(_LogFormatter(format_string))
  129         logging.basicConfig(level=logging.INFO, handlers=[handler])
  130         Log._initialized = True
  131 
  132 Log._static_init()
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/patches/log.py b/patches/log.py
  --- a/patches/log.py
  +++ b/patches/log.py
  @@ -1,3 +1,4 @@
  +import io
   import logging
   import os
   
  @@ -129,4 +130,4 @@
           logging.basicConfig(level=logging.INFO, handlers=[handler])
           Log._initialized = True
   
  -Log._static_init()
  \ No newline at end of file
  +Log._static_init()
  
verification_info: {"golden_diff": "diff --git a/patches/log.py b/patches/log.py\n--- a/patches/log.py\n+++ b/patches/log.py\n@@ -1,3 +1,4 @@\n+import io\n import logging\n import os\n \n@@ -129,4 +130,4 @@\n         logging.basicConfig(level=logging.INFO, handlers=[handler])\n         Log._initialized = True\n \n-Log._static_init()\n\\ No newline at end of file\n+Log._static_init()\n", "issue": "NameError: name 'io' is not defined\n## \ud83d\udc1b Bug\r\n\r\nI am trying to run my scripts on GPU notebook, and I keep getting the following error.\r\n\r\n```shell\r\nTraceback (most recent call last):\r\n  File \"/opt/conda/lib/python3.10/site-packages/wandb/sdk/wandb_init.py\", line 1172, in init\r\n    getcaller()\r\n  File \"/opt/conda/lib/python3.10/site-packages/wandb/sdk/wandb_init.py\", line 846, in getcaller\r\n    src, line, func, stack = logger.findCaller(stack_info=True)\r\n  File \"/root/.local/lib/python3.10/site-packages/log.py\", line 42, in findCaller\r\n    sio = io.StringIO()\r\nNameError: name 'io' is not defined\r\n```\r\n\r\nIn addition, I found that there is no import `io` package in [this](https://github.com/Kaggle/docker-python/blob/main/patches/log.py) code.\r\n\r\n### To Reproduce \r\n\r\n### Expected behavior\r\n\r\n### Additional context\r\n\r\n<!-- Add any other context about the problem here. -->\r\n\n", "before_files": [{"content": "import logging\nimport os\n\nimport google.auth\n\n\n_LOG_TO_FILE_ENV = os.getenv(\"KAGGLE_LOG_TO_FILE\")\n\n\nclass _LogFormatter(logging.Formatter):\n    \"\"\"A logging formatter which truncates long messages.\"\"\"\n\n    _MAX_LOG_LENGTH = 10000  # Be generous, not to truncate long backtraces.\n\n    def format(self, record):\n        msg = super(_LogFormatter, self).format(record)\n        return msg[:_LogFormatter._MAX_LOG_LENGTH] if msg else msg\n\n# TODO(vimota): Clean this up once we're using python 3.8 and can use\n# (https://github.com/python/cpython/commit/dde9fdbe453925279ac3d2a6a72102f6f9ef247c)\n# Right now, making the logging module display the intended frame's information\n# when the logging calls (info, warn, ...) are wrapped (as is the case in our\n# Log class) involves fragile logic.\nclass _Logger(logging.Logger):\n\n    # This is a copy of logging.Logger.findCaller with the filename ignore\n    # set expanded to include the current filename (\".../log.py\").\n    # Copyright 2001-2015 by Vinay Sajip. All Rights Reserved.\n    # License: https://github.com/python/cpython/blob/ce9e62544571e7ade7186697d5dd065fb4c5243f/LICENSE\n    def findCaller(self, stack_info=False, stacklevel=1):\n        f = logging.currentframe()\n        f = f.f_back\n        rv = \"(unknown file)\", 0, \"(unknown function)\", None\n        while hasattr(f, \"f_code\"):\n            co = f.f_code\n            filename = os.path.normcase(co.co_filename)\n            if filename in _ignore_srcfiles:\n                f = f.f_back\n                continue\n            sinfo = None\n            if stack_info:\n                sio = io.StringIO()\n                sio.write('Stack (most recent call last):\\n')\n                traceback.print_stack(f, file=sio)\n                sinfo = sio.getvalue()\n                if sinfo[-1] == '\\n':\n                    sinfo = sinfo[:-1]\n                sio.close()\n            rv = (co.co_filename, f.f_lineno, co.co_name, sinfo)\n            break\n        return rv\n\n\n_srcfile = os.path.normcase(_Logger.findCaller.__code__.co_filename)\n_ignore_srcfiles = (_srcfile, logging._srcfile)\n\nclass Log:\n    \"\"\" Helper aggregate for all things related to logging activity. \"\"\"\n\n    _GLOBAL_LOG = logging.getLogger(\"\")\n    _initialized = False\n\n    # These are convenience helpers. For performance, consider saving Log.get_logger() and using that\n    @staticmethod\n    def critical(msg, *args, **kwargs):\n        Log._GLOBAL_LOG.critical(msg, *args, **kwargs)\n\n    @staticmethod\n    def fatal(msg, *args, **kwargs):\n        Log._GLOBAL_LOG.fatal(msg, *args, **kwargs)\n\n    @staticmethod\n    def exception(msg, *args, **kwargs):\n        Log._GLOBAL_LOG.exception(msg, *args, **kwargs)\n\n    @staticmethod\n    def error(msg, *args, **kwargs):\n        Log._GLOBAL_LOG.error(msg, *args, **kwargs)\n\n    @staticmethod\n    def warn(msg, *args, **kwargs):\n        Log._GLOBAL_LOG.warn(msg, *args, **kwargs)\n\n    @staticmethod\n    def warning(msg, *args, **kwargs):\n        Log._GLOBAL_LOG.warning(msg, *args, **kwargs)\n\n    @staticmethod\n    def debug(msg, *args, **kwargs):\n        Log._GLOBAL_LOG.debug(msg, *args, **kwargs)\n\n    @staticmethod\n    def info(msg, *args, **kwargs):\n        Log._GLOBAL_LOG.info(msg, *args, **kwargs)\n\n    @staticmethod\n    def set_level(loglevel):\n        if isinstance(loglevel, int):\n            Log._GLOBAL_LOG.setLevel(loglevel)\n            return\n        elif isinstance(loglevel, str):\n            # idea from https://docs.python.org/3.5/howto/logging.html#logging-to-a-file\n            numeric_level = getattr(logging, loglevel.upper(), None)\n            if isinstance(numeric_level, int):\n                Log._GLOBAL_LOG.setLevel(numeric_level)\n                return\n\n        raise ValueError('Invalid log level: %s' % loglevel)\n\n    @staticmethod\n    def _static_init():\n        if Log._initialized:\n            return\n\n        logging.setLoggerClass(_Logger)\n        # The root logger's type is unfortunately (and surprisingly) not affected by\n        # `setLoggerClass`. Monkey patch it instead. TODO(vimota): Remove this, see the TODO\n        # associated with _Logger.\n        logging.RootLogger.findCaller = _Logger.findCaller\n        log_to_file = _LOG_TO_FILE_ENV.lower() in (\"yes\", \"true\", \"t\", \"1\") if _LOG_TO_FILE_ENV is not None else True\n        if log_to_file:\n            handler = logging.FileHandler(filename='/tmp/kaggle.log', mode='w')\n        else:\n            handler = logging.StreamHandler()\n        \n        # \".1s\" is for the first letter: http://stackoverflow.com/a/27453084/1869.\n        format_string = \"%(asctime)s %(levelname).1s %(process)d %(filename)s:%(lineno)d] %(message)s\"\n        handler.setFormatter(_LogFormatter(format_string))\n        logging.basicConfig(level=logging.INFO, handlers=[handler])\n        Log._initialized = True\n\nLog._static_init()", "path": "patches/log.py"}], "after_files": [{"content": "import io\nimport logging\nimport os\n\nimport google.auth\n\n\n_LOG_TO_FILE_ENV = os.getenv(\"KAGGLE_LOG_TO_FILE\")\n\n\nclass _LogFormatter(logging.Formatter):\n    \"\"\"A logging formatter which truncates long messages.\"\"\"\n\n    _MAX_LOG_LENGTH = 10000  # Be generous, not to truncate long backtraces.\n\n    def format(self, record):\n        msg = super(_LogFormatter, self).format(record)\n        return msg[:_LogFormatter._MAX_LOG_LENGTH] if msg else msg\n\n# TODO(vimota): Clean this up once we're using python 3.8 and can use\n# (https://github.com/python/cpython/commit/dde9fdbe453925279ac3d2a6a72102f6f9ef247c)\n# Right now, making the logging module display the intended frame's information\n# when the logging calls (info, warn, ...) are wrapped (as is the case in our\n# Log class) involves fragile logic.\nclass _Logger(logging.Logger):\n\n    # This is a copy of logging.Logger.findCaller with the filename ignore\n    # set expanded to include the current filename (\".../log.py\").\n    # Copyright 2001-2015 by Vinay Sajip. All Rights Reserved.\n    # License: https://github.com/python/cpython/blob/ce9e62544571e7ade7186697d5dd065fb4c5243f/LICENSE\n    def findCaller(self, stack_info=False, stacklevel=1):\n        f = logging.currentframe()\n        f = f.f_back\n        rv = \"(unknown file)\", 0, \"(unknown function)\", None\n        while hasattr(f, \"f_code\"):\n            co = f.f_code\n            filename = os.path.normcase(co.co_filename)\n            if filename in _ignore_srcfiles:\n                f = f.f_back\n                continue\n            sinfo = None\n            if stack_info:\n                sio = io.StringIO()\n                sio.write('Stack (most recent call last):\\n')\n                traceback.print_stack(f, file=sio)\n                sinfo = sio.getvalue()\n                if sinfo[-1] == '\\n':\n                    sinfo = sinfo[:-1]\n                sio.close()\n            rv = (co.co_filename, f.f_lineno, co.co_name, sinfo)\n            break\n        return rv\n\n\n_srcfile = os.path.normcase(_Logger.findCaller.__code__.co_filename)\n_ignore_srcfiles = (_srcfile, logging._srcfile)\n\nclass Log:\n    \"\"\" Helper aggregate for all things related to logging activity. \"\"\"\n\n    _GLOBAL_LOG = logging.getLogger(\"\")\n    _initialized = False\n\n    # These are convenience helpers. For performance, consider saving Log.get_logger() and using that\n    @staticmethod\n    def critical(msg, *args, **kwargs):\n        Log._GLOBAL_LOG.critical(msg, *args, **kwargs)\n\n    @staticmethod\n    def fatal(msg, *args, **kwargs):\n        Log._GLOBAL_LOG.fatal(msg, *args, **kwargs)\n\n    @staticmethod\n    def exception(msg, *args, **kwargs):\n        Log._GLOBAL_LOG.exception(msg, *args, **kwargs)\n\n    @staticmethod\n    def error(msg, *args, **kwargs):\n        Log._GLOBAL_LOG.error(msg, *args, **kwargs)\n\n    @staticmethod\n    def warn(msg, *args, **kwargs):\n        Log._GLOBAL_LOG.warn(msg, *args, **kwargs)\n\n    @staticmethod\n    def warning(msg, *args, **kwargs):\n        Log._GLOBAL_LOG.warning(msg, *args, **kwargs)\n\n    @staticmethod\n    def debug(msg, *args, **kwargs):\n        Log._GLOBAL_LOG.debug(msg, *args, **kwargs)\n\n    @staticmethod\n    def info(msg, *args, **kwargs):\n        Log._GLOBAL_LOG.info(msg, *args, **kwargs)\n\n    @staticmethod\n    def set_level(loglevel):\n        if isinstance(loglevel, int):\n            Log._GLOBAL_LOG.setLevel(loglevel)\n            return\n        elif isinstance(loglevel, str):\n            # idea from https://docs.python.org/3.5/howto/logging.html#logging-to-a-file\n            numeric_level = getattr(logging, loglevel.upper(), None)\n            if isinstance(numeric_level, int):\n                Log._GLOBAL_LOG.setLevel(numeric_level)\n                return\n\n        raise ValueError('Invalid log level: %s' % loglevel)\n\n    @staticmethod\n    def _static_init():\n        if Log._initialized:\n            return\n\n        logging.setLoggerClass(_Logger)\n        # The root logger's type is unfortunately (and surprisingly) not affected by\n        # `setLoggerClass`. Monkey patch it instead. TODO(vimota): Remove this, see the TODO\n        # associated with _Logger.\n        logging.RootLogger.findCaller = _Logger.findCaller\n        log_to_file = _LOG_TO_FILE_ENV.lower() in (\"yes\", \"true\", \"t\", \"1\") if _LOG_TO_FILE_ENV is not None else True\n        if log_to_file:\n            handler = logging.FileHandler(filename='/tmp/kaggle.log', mode='w')\n        else:\n            handler = logging.StreamHandler()\n        \n        # \".1s\" is for the first letter: http://stackoverflow.com/a/27453084/1869.\n        format_string = \"%(asctime)s %(levelname).1s %(process)d %(filename)s:%(lineno)d] %(message)s\"\n        handler.setFormatter(_LogFormatter(format_string))\n        logging.basicConfig(level=logging.INFO, handlers=[handler])\n        Log._initialized = True\n\nLog._static_init()\n", "path": "patches/log.py"}]}