We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
use six for configparser for py2 compat


--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `wandb/settings.py`
Content:
```
1 import os
2 import configparser
3 
4 import wandb.util as util
5 from wandb import core, env, wandb_dir
6 
7 
8 class Settings(object):
9     """Global W&B settings stored under $WANDB_CONFIG_DIR/settings.
10     """
11 
12     DEFAULT_SECTION = "default"
13 
14     def __init__(self, load_settings=True):
15         config_dir = os.environ.get(env.CONFIG_DIR, os.path.join(os.path.expanduser("~"), ".config", "wandb"))
16 
17         # Ensure the config directory and settings file both exist.
18         util.mkdir_exists_ok(config_dir)
19         util.mkdir_exists_ok(wandb_dir())
20 
21         self._global_settings_path = os.path.join(config_dir, 'settings')
22         self._global_settings = Settings._settings_wth_defaults({})
23 
24         self._local_settings_path = os.path.join(wandb_dir(), 'settings')
25         self._local_settings = Settings._settings_wth_defaults({})
26 
27         if load_settings:
28             self._global_settings.read([self._global_settings_path])
29             self._local_settings.read([self._local_settings_path])
30 
31     def get(self, section, key, fallback=configparser._UNSET):
32         # Try the local settings first. If we can't find the key, then try the global settings.
33         # If a fallback is provided, return it if we can't find the key in either the local or global
34         # settings.
35         try:
36             return self._local_settings.get(section, key)
37         except configparser.NoOptionError:
38             return self._global_settings.get(section, key, fallback=fallback)
39 
40     def set(self, section, key, value, globally=False):
41         def write_setting(settings, settings_path):
42             if not settings.has_section(section):
43                 settings.add_section(section)
44             settings.set(section, key, str(value))
45             with open(settings_path, "w+") as f:
46                 settings.write(f)
47 
48         if globally:
49             write_setting(self._global_settings, self._global_settings_path)
50         else:
51             write_setting(self._local_settings, self._local_settings_path)
52 
53     def clear(self, section, key, globally=False):
54         def clear_setting(settings, settings_path):
55             settings.remove_option(section, key)
56             with open(settings_path, "w+") as f:
57                 settings.write(f)
58 
59         if globally:
60             clear_setting(self._global_settings, self._global_settings_path)
61         else:
62             clear_setting(self._local_settings, self._local_settings_path)
63 
64     def items(self, section=None):
65         section = section if section is not None else Settings.DEFAULT_SECTION
66 
67         result = {'section': section}
68 
69         try:
70             if section in self._global_settings.sections():
71                 for option in self._global_settings.options(section):
72                     result[option] = self._global_settings.get(section, option)
73             if section in self._local_settings.sections():
74                 for option in self._local_settings.options(section):
75                     result[option] = self._local_settings.get(section, option)
76         except configparser.InterpolationSyntaxError:
77             core.termwarn("Unable to parse settings file")
78 
79         return result
80 
81     @staticmethod
82     def _settings_wth_defaults(default_settings):
83         config = configparser.ConfigParser()
84         config.add_section(Settings.DEFAULT_SECTION)
85         for key, value in default_settings.items():
86             config.set(Settings.DEFAULT_SECTION, key, str(value))
87         return config
88
```
--- 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()

```

diff --git a/wandb/settings.py b/wandb/settings.py
--- a/wandb/settings.py
+++ b/wandb/settings.py
@@ -1,5 +1,6 @@
 import os
-import configparser
+
+from six.moves import configparser
 
 import wandb.util as util
 from wandb import core, env, wandb_dir
@@ -9,7 +10,9 @@
     """Global W&B settings stored under $WANDB_CONFIG_DIR/settings.
     """
 
-    DEFAULT_SECTION = "default"
+    DEFAULT_SECTION = "client"
+
+    _UNSET = object()
 
     def __init__(self, load_settings=True):
         config_dir = os.environ.get(env.CONFIG_DIR, os.path.join(os.path.expanduser("~"), ".config", "wandb"))
@@ -19,23 +22,29 @@
         util.mkdir_exists_ok(wandb_dir())
 
         self._global_settings_path = os.path.join(config_dir, 'settings')
-        self._global_settings = Settings._settings_wth_defaults({})
+        self._global_settings = Settings._settings()
 
         self._local_settings_path = os.path.join(wandb_dir(), 'settings')
-        self._local_settings = Settings._settings_wth_defaults({})
+        self._local_settings = Settings._settings()
 
         if load_settings:
             self._global_settings.read([self._global_settings_path])
             self._local_settings.read([self._local_settings_path])
 
-    def get(self, section, key, fallback=configparser._UNSET):
+    def get(self, section, key, fallback=_UNSET):
         # Try the local settings first. If we can't find the key, then try the global settings.
         # If a fallback is provided, return it if we can't find the key in either the local or global
         # settings.
         try:
             return self._local_settings.get(section, key)
         except configparser.NoOptionError:
-            return self._global_settings.get(section, key, fallback=fallback)
+            try:
+                return self._global_settings.get(section, key)
+            except configparser.NoOptionError:
+                if fallback is not Settings._UNSET:
+                    return fallback
+                else:
+                    raise
 
     def set(self, section, key, value, globally=False):
         def write_setting(settings, settings_path):
@@ -79,7 +88,7 @@
         return result
 
     @staticmethod
-    def _settings_wth_defaults(default_settings):
+    def _settings(default_settings={}):
         config = configparser.ConfigParser()
         config.add_section(Settings.DEFAULT_SECTION)
         for key, value in default_settings.items():

{"golden_diff": "diff --git a/wandb/settings.py b/wandb/settings.py\n--- a/wandb/settings.py\n+++ b/wandb/settings.py\n@@ -1,5 +1,6 @@\n import os\n-import configparser\n+\n+from six.moves import configparser\n \n import wandb.util as util\n from wandb import core, env, wandb_dir\n@@ -9,7 +10,9 @@\n     \"\"\"Global W&B settings stored under $WANDB_CONFIG_DIR/settings.\n     \"\"\"\n \n-    DEFAULT_SECTION = \"default\"\n+    DEFAULT_SECTION = \"client\"\n+\n+    _UNSET = object()\n \n     def __init__(self, load_settings=True):\n         config_dir = os.environ.get(env.CONFIG_DIR, os.path.join(os.path.expanduser(\"~\"), \".config\", \"wandb\"))\n@@ -19,23 +22,29 @@\n         util.mkdir_exists_ok(wandb_dir())\n \n         self._global_settings_path = os.path.join(config_dir, 'settings')\n-        self._global_settings = Settings._settings_wth_defaults({})\n+        self._global_settings = Settings._settings()\n \n         self._local_settings_path = os.path.join(wandb_dir(), 'settings')\n-        self._local_settings = Settings._settings_wth_defaults({})\n+        self._local_settings = Settings._settings()\n \n         if load_settings:\n             self._global_settings.read([self._global_settings_path])\n             self._local_settings.read([self._local_settings_path])\n \n-    def get(self, section, key, fallback=configparser._UNSET):\n+    def get(self, section, key, fallback=_UNSET):\n         # Try the local settings first. If we can't find the key, then try the global settings.\n         # If a fallback is provided, return it if we can't find the key in either the local or global\n         # settings.\n         try:\n             return self._local_settings.get(section, key)\n         except configparser.NoOptionError:\n-            return self._global_settings.get(section, key, fallback=fallback)\n+            try:\n+                return self._global_settings.get(section, key)\n+            except configparser.NoOptionError:\n+                if fallback is not Settings._UNSET:\n+                    return fallback\n+                else:\n+                    raise\n \n     def set(self, section, key, value, globally=False):\n         def write_setting(settings, settings_path):\n@@ -79,7 +88,7 @@\n         return result\n \n     @staticmethod\n-    def _settings_wth_defaults(default_settings):\n+    def _settings(default_settings={}):\n         config = configparser.ConfigParser()\n         config.add_section(Settings.DEFAULT_SECTION)\n         for key, value in default_settings.items():\n", "issue": "use six for configparser for py2 compat\n\n", "before_files": [{"content": "import os\nimport configparser\n\nimport wandb.util as util\nfrom wandb import core, env, wandb_dir\n\n\nclass Settings(object):\n    \"\"\"Global W&B settings stored under $WANDB_CONFIG_DIR/settings.\n    \"\"\"\n\n    DEFAULT_SECTION = \"default\"\n\n    def __init__(self, load_settings=True):\n        config_dir = os.environ.get(env.CONFIG_DIR, os.path.join(os.path.expanduser(\"~\"), \".config\", \"wandb\"))\n\n        # Ensure the config directory and settings file both exist.\n        util.mkdir_exists_ok(config_dir)\n        util.mkdir_exists_ok(wandb_dir())\n\n        self._global_settings_path = os.path.join(config_dir, 'settings')\n        self._global_settings = Settings._settings_wth_defaults({})\n\n        self._local_settings_path = os.path.join(wandb_dir(), 'settings')\n        self._local_settings = Settings._settings_wth_defaults({})\n\n        if load_settings:\n            self._global_settings.read([self._global_settings_path])\n            self._local_settings.read([self._local_settings_path])\n\n    def get(self, section, key, fallback=configparser._UNSET):\n        # Try the local settings first. If we can't find the key, then try the global settings.\n        # If a fallback is provided, return it if we can't find the key in either the local or global\n        # settings.\n        try:\n            return self._local_settings.get(section, key)\n        except configparser.NoOptionError:\n            return self._global_settings.get(section, key, fallback=fallback)\n\n    def set(self, section, key, value, globally=False):\n        def write_setting(settings, settings_path):\n            if not settings.has_section(section):\n                settings.add_section(section)\n            settings.set(section, key, str(value))\n            with open(settings_path, \"w+\") as f:\n                settings.write(f)\n\n        if globally:\n            write_setting(self._global_settings, self._global_settings_path)\n        else:\n            write_setting(self._local_settings, self._local_settings_path)\n\n    def clear(self, section, key, globally=False):\n        def clear_setting(settings, settings_path):\n            settings.remove_option(section, key)\n            with open(settings_path, \"w+\") as f:\n                settings.write(f)\n\n        if globally:\n            clear_setting(self._global_settings, self._global_settings_path)\n        else:\n            clear_setting(self._local_settings, self._local_settings_path)\n\n    def items(self, section=None):\n        section = section if section is not None else Settings.DEFAULT_SECTION\n\n        result = {'section': section}\n\n        try:\n            if section in self._global_settings.sections():\n                for option in self._global_settings.options(section):\n                    result[option] = self._global_settings.get(section, option)\n            if section in self._local_settings.sections():\n                for option in self._local_settings.options(section):\n                    result[option] = self._local_settings.get(section, option)\n        except configparser.InterpolationSyntaxError:\n            core.termwarn(\"Unable to parse settings file\")\n\n        return result\n\n    @staticmethod\n    def _settings_wth_defaults(default_settings):\n        config = configparser.ConfigParser()\n        config.add_section(Settings.DEFAULT_SECTION)\n        for key, value in default_settings.items():\n            config.set(Settings.DEFAULT_SECTION, key, str(value))\n        return config\n", "path": "wandb/settings.py"}], "after_files": [{"content": "import os\n\nfrom six.moves import configparser\n\nimport wandb.util as util\nfrom wandb import core, env, wandb_dir\n\n\nclass Settings(object):\n    \"\"\"Global W&B settings stored under $WANDB_CONFIG_DIR/settings.\n    \"\"\"\n\n    DEFAULT_SECTION = \"client\"\n\n    _UNSET = object()\n\n    def __init__(self, load_settings=True):\n        config_dir = os.environ.get(env.CONFIG_DIR, os.path.join(os.path.expanduser(\"~\"), \".config\", \"wandb\"))\n\n        # Ensure the config directory and settings file both exist.\n        util.mkdir_exists_ok(config_dir)\n        util.mkdir_exists_ok(wandb_dir())\n\n        self._global_settings_path = os.path.join(config_dir, 'settings')\n        self._global_settings = Settings._settings()\n\n        self._local_settings_path = os.path.join(wandb_dir(), 'settings')\n        self._local_settings = Settings._settings()\n\n        if load_settings:\n            self._global_settings.read([self._global_settings_path])\n            self._local_settings.read([self._local_settings_path])\n\n    def get(self, section, key, fallback=_UNSET):\n        # Try the local settings first. If we can't find the key, then try the global settings.\n        # If a fallback is provided, return it if we can't find the key in either the local or global\n        # settings.\n        try:\n            return self._local_settings.get(section, key)\n        except configparser.NoOptionError:\n            try:\n                return self._global_settings.get(section, key)\n            except configparser.NoOptionError:\n                if fallback is not Settings._UNSET:\n                    return fallback\n                else:\n                    raise\n\n    def set(self, section, key, value, globally=False):\n        def write_setting(settings, settings_path):\n            if not settings.has_section(section):\n                settings.add_section(section)\n            settings.set(section, key, str(value))\n            with open(settings_path, \"w+\") as f:\n                settings.write(f)\n\n        if globally:\n            write_setting(self._global_settings, self._global_settings_path)\n        else:\n            write_setting(self._local_settings, self._local_settings_path)\n\n    def clear(self, section, key, globally=False):\n        def clear_setting(settings, settings_path):\n            settings.remove_option(section, key)\n            with open(settings_path, \"w+\") as f:\n                settings.write(f)\n\n        if globally:\n            clear_setting(self._global_settings, self._global_settings_path)\n        else:\n            clear_setting(self._local_settings, self._local_settings_path)\n\n    def items(self, section=None):\n        section = section if section is not None else Settings.DEFAULT_SECTION\n\n        result = {'section': section}\n\n        try:\n            if section in self._global_settings.sections():\n                for option in self._global_settings.options(section):\n                    result[option] = self._global_settings.get(section, option)\n            if section in self._local_settings.sections():\n                for option in self._local_settings.options(section):\n                    result[option] = self._local_settings.get(section, option)\n        except configparser.InterpolationSyntaxError:\n            core.termwarn(\"Unable to parse settings file\")\n\n        return result\n\n    @staticmethod\n    def _settings(default_settings={}):\n        config = configparser.ConfigParser()\n        config.add_section(Settings.DEFAULT_SECTION)\n        for key, value in default_settings.items():\n            config.set(Settings.DEFAULT_SECTION, key, str(value))\n        return config\n", "path": "wandb/settings.py"}]}