We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
Remove the third-party `mock` dependency
>Functions in certbot.tests.util were previously using the third party mock module if it was available for backwards compatibiliy. This behavior will be removed and unittest.mock from the standard library will always be used instead.

e.g. https://github.com/certbot/certbot/blob/5c111d0bd1206d864d7cb93754e101f6073bc669/certbot/certbot/tests/util.py#L38-L50





--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `certbot/setup.py`
Content:
```
1 import codecs
2 import os
3 import re
4 import sys
5 
6 from pkg_resources import parse_version
7 from setuptools import __version__ as setuptools_version
8 from setuptools import find_packages
9 from setuptools import setup
10 
11 min_setuptools_version='41.6.0'
12 # This conditional isn't necessary, but it provides better error messages to
13 # people who try to install this package with older versions of setuptools.
14 if parse_version(setuptools_version) < parse_version(min_setuptools_version):
15     raise RuntimeError(f'setuptools {min_setuptools_version}+ is required')
16 
17 # Workaround for https://bugs.python.org/issue8876, see
18 # https://bugs.python.org/issue8876#msg208792
19 # This can be removed when using Python 2.7.9 or later:
20 # https://hg.python.org/cpython/raw-file/v2.7.9/Misc/NEWS
21 if os.path.abspath(__file__).split(os.path.sep)[1] == 'vagrant':
22     del os.link
23 
24 
25 def read_file(filename, encoding='utf8'):
26     """Read unicode from given file."""
27     with codecs.open(filename, encoding=encoding) as fd:
28         return fd.read()
29 
30 
31 here = os.path.abspath(os.path.dirname(__file__))
32 
33 # read version number (and other metadata) from package init
34 init_fn = os.path.join(here, 'certbot', '__init__.py')
35 meta = dict(re.findall(r"""__([a-z]+)__ = '([^']+)""", read_file(init_fn)))
36 
37 readme = read_file(os.path.join(here, 'README.rst'))
38 version = meta['version']
39 
40 # This package relies on PyOpenSSL and requests, however, it isn't specified
41 # here to avoid masking the more specific request requirements in acme. See
42 # https://github.com/pypa/pip/issues/988 for more info.
43 install_requires = [
44     # We specify the minimum acme version as the current Certbot version for
45     # simplicity. See https://github.com/certbot/certbot/issues/8761 for more
46     # info.
47     f'acme>={version}',
48     # We technically need ConfigArgParse 0.10.0 for Python 2.6 support, but
49     # saying so here causes a runtime error against our temporary fork of 0.9.3
50     # in which we added 2.6 support (see #2243), so we relax the requirement.
51     'ConfigArgParse>=0.9.3',
52     'configobj>=5.0.6',
53     'cryptography>=2.5.0',
54     'distro>=1.0.1',
55     'josepy>=1.13.0',
56     'parsedatetime>=2.4',
57     'pyrfc3339',
58     'pytz>=2019.3',
59     # This dependency needs to be added using environment markers to avoid its
60     # installation on Linux.
61     'pywin32>=300 ; sys_platform == "win32"',
62     f'setuptools>={min_setuptools_version}',
63 ]
64 
65 dev_extras = [
66     'azure-devops',
67     'ipdb',
68     # poetry 1.2.0+ is required for it to pin pip, setuptools, and wheel. See
69     # https://github.com/python-poetry/poetry/issues/1584.
70     'poetry>=1.2.0a1',
71     'twine',
72 ]
73 
74 docs_extras = [
75     # If you have Sphinx<1.5.1, you need docutils<0.13.1
76     # https://github.com/sphinx-doc/sphinx/issues/3212
77     'Sphinx>=1.2',  # Annotation support
78     'sphinx_rtd_theme',
79 ]
80 
81 # Tools like pip, wheel, and tox are listed here to ensure they are properly
82 # pinned and installed during automated testing.
83 test_extras = [
84     'coverage',
85     'mypy',
86     'pip',
87     'pylint',
88     'pytest',
89     'pytest-cov',
90     'pytest-xdist',
91     'setuptools',
92     'tox',
93     'types-mock',
94     'types-pyOpenSSL',
95     'types-pyRFC3339',
96     'types-pytz',
97     'types-requests',
98     'types-setuptools',
99     'types-six',
100     # typing-extensions is required to import typing.Protocol and make the mypy checks
101     # pass (along with pylint about non-existent objects) on Python 3.7
102     'typing-extensions',
103     'wheel',
104 ]
105 
106 
107 all_extras = dev_extras + docs_extras + test_extras
108 
109 setup(
110     name='certbot',
111     version=version,
112     description="ACME client",
113     long_description=readme,
114     url='https://github.com/letsencrypt/letsencrypt',
115     author="Certbot Project",
116     author_email='certbot-dev@eff.org',
117     license='Apache License 2.0',
118     python_requires='>=3.7',
119     classifiers=[
120         'Development Status :: 5 - Production/Stable',
121         'Environment :: Console',
122         'Environment :: Console :: Curses',
123         'Intended Audience :: System Administrators',
124         'License :: OSI Approved :: Apache Software License',
125         'Operating System :: POSIX :: Linux',
126         'Programming Language :: Python',
127         'Programming Language :: Python :: 3',
128         'Programming Language :: Python :: 3.7',
129         'Programming Language :: Python :: 3.8',
130         'Programming Language :: Python :: 3.9',
131         'Programming Language :: Python :: 3.10',
132         'Topic :: Internet :: WWW/HTTP',
133         'Topic :: Security',
134         'Topic :: System :: Installation/Setup',
135         'Topic :: System :: Networking',
136         'Topic :: System :: Systems Administration',
137         'Topic :: Utilities',
138     ],
139 
140     packages=find_packages(exclude=['docs', 'examples', 'tests', 'venv']),
141     include_package_data=True,
142 
143     install_requires=install_requires,
144     extras_require={
145         'all': all_extras,
146         'dev': dev_extras,
147         'docs': docs_extras,
148         'test': test_extras,
149     },
150 
151     entry_points={
152         'console_scripts': [
153             'certbot = certbot.main:main',
154         ],
155         'certbot.plugins': [
156             'manual = certbot._internal.plugins.manual:Authenticator',
157             'null = certbot._internal.plugins.null:Installer',
158             'standalone = certbot._internal.plugins.standalone:Authenticator',
159             'webroot = certbot._internal.plugins.webroot:Authenticator',
160         ],
161     },
162 )
163
```
--- 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/certbot/setup.py b/certbot/setup.py
--- a/certbot/setup.py
+++ b/certbot/setup.py
@@ -90,7 +90,6 @@
     'pytest-xdist',
     'setuptools',
     'tox',
-    'types-mock',
     'types-pyOpenSSL',
     'types-pyRFC3339',
     'types-pytz',

{"golden_diff": "diff --git a/certbot/setup.py b/certbot/setup.py\n--- a/certbot/setup.py\n+++ b/certbot/setup.py\n@@ -90,7 +90,6 @@\n     'pytest-xdist',\n     'setuptools',\n     'tox',\n-    'types-mock',\n     'types-pyOpenSSL',\n     'types-pyRFC3339',\n     'types-pytz',\n", "issue": "Remove the third-party `mock` dependency\n>Functions in certbot.tests.util were previously using the third party mock module if it was available for backwards compatibiliy. This behavior will be removed and unittest.mock from the standard library will always be used instead.\r\n\r\ne.g. https://github.com/certbot/certbot/blob/5c111d0bd1206d864d7cb93754e101f6073bc669/certbot/certbot/tests/util.py#L38-L50\r\n\r\n\r\n\r\n\n", "before_files": [{"content": "import codecs\nimport os\nimport re\nimport sys\n\nfrom pkg_resources import parse_version\nfrom setuptools import __version__ as setuptools_version\nfrom setuptools import find_packages\nfrom setuptools import setup\n\nmin_setuptools_version='41.6.0'\n# This conditional isn't necessary, but it provides better error messages to\n# people who try to install this package with older versions of setuptools.\nif parse_version(setuptools_version) < parse_version(min_setuptools_version):\n    raise RuntimeError(f'setuptools {min_setuptools_version}+ is required')\n\n# Workaround for https://bugs.python.org/issue8876, see\n# https://bugs.python.org/issue8876#msg208792\n# This can be removed when using Python 2.7.9 or later:\n# https://hg.python.org/cpython/raw-file/v2.7.9/Misc/NEWS\nif os.path.abspath(__file__).split(os.path.sep)[1] == 'vagrant':\n    del os.link\n\n\ndef read_file(filename, encoding='utf8'):\n    \"\"\"Read unicode from given file.\"\"\"\n    with codecs.open(filename, encoding=encoding) as fd:\n        return fd.read()\n\n\nhere = os.path.abspath(os.path.dirname(__file__))\n\n# read version number (and other metadata) from package init\ninit_fn = os.path.join(here, 'certbot', '__init__.py')\nmeta = dict(re.findall(r\"\"\"__([a-z]+)__ = '([^']+)\"\"\", read_file(init_fn)))\n\nreadme = read_file(os.path.join(here, 'README.rst'))\nversion = meta['version']\n\n# This package relies on PyOpenSSL and requests, however, it isn't specified\n# here to avoid masking the more specific request requirements in acme. See\n# https://github.com/pypa/pip/issues/988 for more info.\ninstall_requires = [\n    # We specify the minimum acme version as the current Certbot version for\n    # simplicity. See https://github.com/certbot/certbot/issues/8761 for more\n    # info.\n    f'acme>={version}',\n    # We technically need ConfigArgParse 0.10.0 for Python 2.6 support, but\n    # saying so here causes a runtime error against our temporary fork of 0.9.3\n    # in which we added 2.6 support (see #2243), so we relax the requirement.\n    'ConfigArgParse>=0.9.3',\n    'configobj>=5.0.6',\n    'cryptography>=2.5.0',\n    'distro>=1.0.1',\n    'josepy>=1.13.0',\n    'parsedatetime>=2.4',\n    'pyrfc3339',\n    'pytz>=2019.3',\n    # This dependency needs to be added using environment markers to avoid its\n    # installation on Linux.\n    'pywin32>=300 ; sys_platform == \"win32\"',\n    f'setuptools>={min_setuptools_version}',\n]\n\ndev_extras = [\n    'azure-devops',\n    'ipdb',\n    # poetry 1.2.0+ is required for it to pin pip, setuptools, and wheel. See\n    # https://github.com/python-poetry/poetry/issues/1584.\n    'poetry>=1.2.0a1',\n    'twine',\n]\n\ndocs_extras = [\n    # If you have Sphinx<1.5.1, you need docutils<0.13.1\n    # https://github.com/sphinx-doc/sphinx/issues/3212\n    'Sphinx>=1.2',  # Annotation support\n    'sphinx_rtd_theme',\n]\n\n# Tools like pip, wheel, and tox are listed here to ensure they are properly\n# pinned and installed during automated testing.\ntest_extras = [\n    'coverage',\n    'mypy',\n    'pip',\n    'pylint',\n    'pytest',\n    'pytest-cov',\n    'pytest-xdist',\n    'setuptools',\n    'tox',\n    'types-mock',\n    'types-pyOpenSSL',\n    'types-pyRFC3339',\n    'types-pytz',\n    'types-requests',\n    'types-setuptools',\n    'types-six',\n    # typing-extensions is required to import typing.Protocol and make the mypy checks\n    # pass (along with pylint about non-existent objects) on Python 3.7\n    'typing-extensions',\n    'wheel',\n]\n\n\nall_extras = dev_extras + docs_extras + test_extras\n\nsetup(\n    name='certbot',\n    version=version,\n    description=\"ACME client\",\n    long_description=readme,\n    url='https://github.com/letsencrypt/letsencrypt',\n    author=\"Certbot Project\",\n    author_email='certbot-dev@eff.org',\n    license='Apache License 2.0',\n    python_requires='>=3.7',\n    classifiers=[\n        'Development Status :: 5 - Production/Stable',\n        'Environment :: Console',\n        'Environment :: Console :: Curses',\n        'Intended Audience :: System Administrators',\n        'License :: OSI Approved :: Apache Software License',\n        'Operating System :: POSIX :: Linux',\n        'Programming Language :: Python',\n        'Programming Language :: Python :: 3',\n        'Programming Language :: Python :: 3.7',\n        'Programming Language :: Python :: 3.8',\n        'Programming Language :: Python :: 3.9',\n        'Programming Language :: Python :: 3.10',\n        'Topic :: Internet :: WWW/HTTP',\n        'Topic :: Security',\n        'Topic :: System :: Installation/Setup',\n        'Topic :: System :: Networking',\n        'Topic :: System :: Systems Administration',\n        'Topic :: Utilities',\n    ],\n\n    packages=find_packages(exclude=['docs', 'examples', 'tests', 'venv']),\n    include_package_data=True,\n\n    install_requires=install_requires,\n    extras_require={\n        'all': all_extras,\n        'dev': dev_extras,\n        'docs': docs_extras,\n        'test': test_extras,\n    },\n\n    entry_points={\n        'console_scripts': [\n            'certbot = certbot.main:main',\n        ],\n        'certbot.plugins': [\n            'manual = certbot._internal.plugins.manual:Authenticator',\n            'null = certbot._internal.plugins.null:Installer',\n            'standalone = certbot._internal.plugins.standalone:Authenticator',\n            'webroot = certbot._internal.plugins.webroot:Authenticator',\n        ],\n    },\n)\n", "path": "certbot/setup.py"}], "after_files": [{"content": "import codecs\nimport os\nimport re\nimport sys\n\nfrom pkg_resources import parse_version\nfrom setuptools import __version__ as setuptools_version\nfrom setuptools import find_packages\nfrom setuptools import setup\n\nmin_setuptools_version='41.6.0'\n# This conditional isn't necessary, but it provides better error messages to\n# people who try to install this package with older versions of setuptools.\nif parse_version(setuptools_version) < parse_version(min_setuptools_version):\n    raise RuntimeError(f'setuptools {min_setuptools_version}+ is required')\n\n# Workaround for https://bugs.python.org/issue8876, see\n# https://bugs.python.org/issue8876#msg208792\n# This can be removed when using Python 2.7.9 or later:\n# https://hg.python.org/cpython/raw-file/v2.7.9/Misc/NEWS\nif os.path.abspath(__file__).split(os.path.sep)[1] == 'vagrant':\n    del os.link\n\n\ndef read_file(filename, encoding='utf8'):\n    \"\"\"Read unicode from given file.\"\"\"\n    with codecs.open(filename, encoding=encoding) as fd:\n        return fd.read()\n\n\nhere = os.path.abspath(os.path.dirname(__file__))\n\n# read version number (and other metadata) from package init\ninit_fn = os.path.join(here, 'certbot', '__init__.py')\nmeta = dict(re.findall(r\"\"\"__([a-z]+)__ = '([^']+)\"\"\", read_file(init_fn)))\n\nreadme = read_file(os.path.join(here, 'README.rst'))\nversion = meta['version']\n\n# This package relies on PyOpenSSL and requests, however, it isn't specified\n# here to avoid masking the more specific request requirements in acme. See\n# https://github.com/pypa/pip/issues/988 for more info.\ninstall_requires = [\n    # We specify the minimum acme version as the current Certbot version for\n    # simplicity. See https://github.com/certbot/certbot/issues/8761 for more\n    # info.\n    f'acme>={version}',\n    # We technically need ConfigArgParse 0.10.0 for Python 2.6 support, but\n    # saying so here causes a runtime error against our temporary fork of 0.9.3\n    # in which we added 2.6 support (see #2243), so we relax the requirement.\n    'ConfigArgParse>=0.9.3',\n    'configobj>=5.0.6',\n    'cryptography>=2.5.0',\n    'distro>=1.0.1',\n    'josepy>=1.13.0',\n    'parsedatetime>=2.4',\n    'pyrfc3339',\n    'pytz>=2019.3',\n    # This dependency needs to be added using environment markers to avoid its\n    # installation on Linux.\n    'pywin32>=300 ; sys_platform == \"win32\"',\n    f'setuptools>={min_setuptools_version}',\n]\n\ndev_extras = [\n    'azure-devops',\n    'ipdb',\n    # poetry 1.2.0+ is required for it to pin pip, setuptools, and wheel. See\n    # https://github.com/python-poetry/poetry/issues/1584.\n    'poetry>=1.2.0a1',\n    'twine',\n]\n\ndocs_extras = [\n    # If you have Sphinx<1.5.1, you need docutils<0.13.1\n    # https://github.com/sphinx-doc/sphinx/issues/3212\n    'Sphinx>=1.2',  # Annotation support\n    'sphinx_rtd_theme',\n]\n\n# Tools like pip, wheel, and tox are listed here to ensure they are properly\n# pinned and installed during automated testing.\ntest_extras = [\n    'coverage',\n    'mypy',\n    'pip',\n    'pylint',\n    'pytest',\n    'pytest-cov',\n    'pytest-xdist',\n    'setuptools',\n    'tox',\n    'types-pyOpenSSL',\n    'types-pyRFC3339',\n    'types-pytz',\n    'types-requests',\n    'types-setuptools',\n    'types-six',\n    # typing-extensions is required to import typing.Protocol and make the mypy checks\n    # pass (along with pylint about non-existent objects) on Python 3.7\n    'typing-extensions',\n    'wheel',\n]\n\n\nall_extras = dev_extras + docs_extras + test_extras\n\nsetup(\n    name='certbot',\n    version=version,\n    description=\"ACME client\",\n    long_description=readme,\n    url='https://github.com/letsencrypt/letsencrypt',\n    author=\"Certbot Project\",\n    author_email='certbot-dev@eff.org',\n    license='Apache License 2.0',\n    python_requires='>=3.7',\n    classifiers=[\n        'Development Status :: 5 - Production/Stable',\n        'Environment :: Console',\n        'Environment :: Console :: Curses',\n        'Intended Audience :: System Administrators',\n        'License :: OSI Approved :: Apache Software License',\n        'Operating System :: POSIX :: Linux',\n        'Programming Language :: Python',\n        'Programming Language :: Python :: 3',\n        'Programming Language :: Python :: 3.7',\n        'Programming Language :: Python :: 3.8',\n        'Programming Language :: Python :: 3.9',\n        'Programming Language :: Python :: 3.10',\n        'Topic :: Internet :: WWW/HTTP',\n        'Topic :: Security',\n        'Topic :: System :: Installation/Setup',\n        'Topic :: System :: Networking',\n        'Topic :: System :: Systems Administration',\n        'Topic :: Utilities',\n    ],\n\n    packages=find_packages(exclude=['docs', 'examples', 'tests', 'venv']),\n    include_package_data=True,\n\n    install_requires=install_requires,\n    extras_require={\n        'all': all_extras,\n        'dev': dev_extras,\n        'docs': docs_extras,\n        'test': test_extras,\n    },\n\n    entry_points={\n        'console_scripts': [\n            'certbot = certbot.main:main',\n        ],\n        'certbot.plugins': [\n            'manual = certbot._internal.plugins.manual:Authenticator',\n            'null = certbot._internal.plugins.null:Installer',\n            'standalone = certbot._internal.plugins.standalone:Authenticator',\n            'webroot = certbot._internal.plugins.webroot:Authenticator',\n        ],\n    },\n)\n", "path": "certbot/setup.py"}]}