We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
upgrade to PyYAML 5.2
PyYAML 5.2 is out, with more security fixes.  aws-cli pins to an older version, preventing upgrades.  Please update the pin.

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `setup.py`
Content:
```
1 #!/usr/bin/env python
2 import codecs
3 import os.path
4 import re
5 import sys
6 
7 from setuptools import setup, find_packages
8 
9 
10 here = os.path.abspath(os.path.dirname(__file__))
11 
12 
13 def read(*parts):
14     return codecs.open(os.path.join(here, *parts), 'r').read()
15 
16 
17 def find_version(*file_paths):
18     version_file = read(*file_paths)
19     version_match = re.search(r"^__version__ = ['\"]([^'\"]*)['\"]",
20                               version_file, re.M)
21     if version_match:
22         return version_match.group(1)
23     raise RuntimeError("Unable to find version string.")
24 
25 
26 install_requires = ['botocore==1.13.38',
27                     'docutils>=0.10,<0.16',
28                     'rsa>=3.1.2,<=3.5.0',
29                     's3transfer>=0.2.0,<0.3.0']
30 
31 
32 if sys.version_info[:2] == (2, 6):
33     # For python2.6 we have to require argparse since it
34     # was not in stdlib until 2.7.
35     install_requires.append('argparse>=1.1')
36 
37     # For Python 2.6, we have to require a different verion of PyYAML since the latest
38     # versions dropped support for Python 2.6.
39     install_requires.append('PyYAML>=3.10,<=3.13')
40 
41     # Colorama removed support for EOL pythons.
42     install_requires.append('colorama>=0.2.5,<=0.3.9')
43 elif sys.version_info[:2] == (3, 3):
44     install_requires.append('PyYAML>=3.10,<=3.13')
45     # Colorama removed support for EOL pythons.
46     install_requires.append('colorama>=0.2.5,<=0.3.9')
47 else:
48     install_requires.append('PyYAML>=3.10,<5.2')
49     install_requires.append('colorama>=0.2.5,<0.4.2')
50 
51 
52 setup_options = dict(
53     name='awscli',
54     version=find_version("awscli", "__init__.py"),
55     description='Universal Command Line Environment for AWS.',
56     long_description=read('README.rst'),
57     author='Amazon Web Services',
58     url='http://aws.amazon.com/cli/',
59     scripts=['bin/aws', 'bin/aws.cmd',
60              'bin/aws_completer', 'bin/aws_zsh_completer.sh',
61              'bin/aws_bash_completer'],
62     packages=find_packages(exclude=['tests*']),
63     package_data={'awscli': ['data/*.json', 'examples/*/*.rst',
64                              'examples/*/*.txt', 'examples/*/*/*.txt',
65                              'examples/*/*/*.rst', 'topics/*.rst',
66                              'topics/*.json']},
67     install_requires=install_requires,
68     extras_require={
69         ':python_version=="2.6"': [
70             'argparse>=1.1',
71         ]
72     },
73     license="Apache License 2.0",
74     classifiers=[
75         'Development Status :: 5 - Production/Stable',
76         'Intended Audience :: Developers',
77         'Intended Audience :: System Administrators',
78         'Natural Language :: English',
79         'License :: OSI Approved :: Apache Software License',
80         'Programming Language :: Python',
81         'Programming Language :: Python :: 2',
82         'Programming Language :: Python :: 2.6',
83         'Programming Language :: Python :: 2.7',
84         'Programming Language :: Python :: 3',
85         'Programming Language :: Python :: 3.3',
86         'Programming Language :: Python :: 3.4',
87         'Programming Language :: Python :: 3.5',
88         'Programming Language :: Python :: 3.6',
89         'Programming Language :: Python :: 3.7',
90     ],
91 )
92 
93 if 'py2exe' in sys.argv:
94     # This will actually give us a py2exe command.
95     import py2exe
96     # And we have some py2exe specific options.
97     setup_options['options'] = {
98         'py2exe': {
99             'optimize': 0,
100             'skip_archive': True,
101             'dll_excludes': ['crypt32.dll'],
102             'packages': ['docutils', 'urllib', 'httplib', 'HTMLParser',
103                          'awscli', 'ConfigParser', 'xml.etree', 'pipes'],
104         }
105     }
106     setup_options['console'] = ['bin/aws']
107 
108 
109 setup(**setup_options)
110
```
--- 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/setup.py b/setup.py
--- a/setup.py
+++ b/setup.py
@@ -45,7 +45,7 @@
     # Colorama removed support for EOL pythons.
     install_requires.append('colorama>=0.2.5,<=0.3.9')
 else:
-    install_requires.append('PyYAML>=3.10,<5.2')
+    install_requires.append('PyYAML>=3.10,<5.3')
     install_requires.append('colorama>=0.2.5,<0.4.2')

{"golden_diff": "diff --git a/setup.py b/setup.py\n--- a/setup.py\n+++ b/setup.py\n@@ -45,7 +45,7 @@\n     # Colorama removed support for EOL pythons.\n     install_requires.append('colorama>=0.2.5,<=0.3.9')\n else:\n-    install_requires.append('PyYAML>=3.10,<5.2')\n+    install_requires.append('PyYAML>=3.10,<5.3')\n     install_requires.append('colorama>=0.2.5,<0.4.2')\n", "issue": "upgrade to PyYAML 5.2\nPyYAML 5.2 is out, with more security fixes.  aws-cli pins to an older version, preventing upgrades.  Please update the pin.\n", "before_files": [{"content": "#!/usr/bin/env python\nimport codecs\nimport os.path\nimport re\nimport sys\n\nfrom setuptools import setup, find_packages\n\n\nhere = os.path.abspath(os.path.dirname(__file__))\n\n\ndef read(*parts):\n    return codecs.open(os.path.join(here, *parts), 'r').read()\n\n\ndef find_version(*file_paths):\n    version_file = read(*file_paths)\n    version_match = re.search(r\"^__version__ = ['\\\"]([^'\\\"]*)['\\\"]\",\n                              version_file, re.M)\n    if version_match:\n        return version_match.group(1)\n    raise RuntimeError(\"Unable to find version string.\")\n\n\ninstall_requires = ['botocore==1.13.38',\n                    'docutils>=0.10,<0.16',\n                    'rsa>=3.1.2,<=3.5.0',\n                    's3transfer>=0.2.0,<0.3.0']\n\n\nif sys.version_info[:2] == (2, 6):\n    # For python2.6 we have to require argparse since it\n    # was not in stdlib until 2.7.\n    install_requires.append('argparse>=1.1')\n\n    # For Python 2.6, we have to require a different verion of PyYAML since the latest\n    # versions dropped support for Python 2.6.\n    install_requires.append('PyYAML>=3.10,<=3.13')\n\n    # Colorama removed support for EOL pythons.\n    install_requires.append('colorama>=0.2.5,<=0.3.9')\nelif sys.version_info[:2] == (3, 3):\n    install_requires.append('PyYAML>=3.10,<=3.13')\n    # Colorama removed support for EOL pythons.\n    install_requires.append('colorama>=0.2.5,<=0.3.9')\nelse:\n    install_requires.append('PyYAML>=3.10,<5.2')\n    install_requires.append('colorama>=0.2.5,<0.4.2')\n\n\nsetup_options = dict(\n    name='awscli',\n    version=find_version(\"awscli\", \"__init__.py\"),\n    description='Universal Command Line Environment for AWS.',\n    long_description=read('README.rst'),\n    author='Amazon Web Services',\n    url='http://aws.amazon.com/cli/',\n    scripts=['bin/aws', 'bin/aws.cmd',\n             'bin/aws_completer', 'bin/aws_zsh_completer.sh',\n             'bin/aws_bash_completer'],\n    packages=find_packages(exclude=['tests*']),\n    package_data={'awscli': ['data/*.json', 'examples/*/*.rst',\n                             'examples/*/*.txt', 'examples/*/*/*.txt',\n                             'examples/*/*/*.rst', 'topics/*.rst',\n                             'topics/*.json']},\n    install_requires=install_requires,\n    extras_require={\n        ':python_version==\"2.6\"': [\n            'argparse>=1.1',\n        ]\n    },\n    license=\"Apache License 2.0\",\n    classifiers=[\n        'Development Status :: 5 - Production/Stable',\n        'Intended Audience :: Developers',\n        'Intended Audience :: System Administrators',\n        'Natural Language :: English',\n        'License :: OSI Approved :: Apache Software License',\n        'Programming Language :: Python',\n        'Programming Language :: Python :: 2',\n        'Programming Language :: Python :: 2.6',\n        'Programming Language :: Python :: 2.7',\n        'Programming Language :: Python :: 3',\n        'Programming Language :: Python :: 3.3',\n        'Programming Language :: Python :: 3.4',\n        'Programming Language :: Python :: 3.5',\n        'Programming Language :: Python :: 3.6',\n        'Programming Language :: Python :: 3.7',\n    ],\n)\n\nif 'py2exe' in sys.argv:\n    # This will actually give us a py2exe command.\n    import py2exe\n    # And we have some py2exe specific options.\n    setup_options['options'] = {\n        'py2exe': {\n            'optimize': 0,\n            'skip_archive': True,\n            'dll_excludes': ['crypt32.dll'],\n            'packages': ['docutils', 'urllib', 'httplib', 'HTMLParser',\n                         'awscli', 'ConfigParser', 'xml.etree', 'pipes'],\n        }\n    }\n    setup_options['console'] = ['bin/aws']\n\n\nsetup(**setup_options)\n", "path": "setup.py"}], "after_files": [{"content": "#!/usr/bin/env python\nimport codecs\nimport os.path\nimport re\nimport sys\n\nfrom setuptools import setup, find_packages\n\n\nhere = os.path.abspath(os.path.dirname(__file__))\n\n\ndef read(*parts):\n    return codecs.open(os.path.join(here, *parts), 'r').read()\n\n\ndef find_version(*file_paths):\n    version_file = read(*file_paths)\n    version_match = re.search(r\"^__version__ = ['\\\"]([^'\\\"]*)['\\\"]\",\n                              version_file, re.M)\n    if version_match:\n        return version_match.group(1)\n    raise RuntimeError(\"Unable to find version string.\")\n\n\ninstall_requires = ['botocore==1.13.38',\n                    'docutils>=0.10,<0.16',\n                    'rsa>=3.1.2,<=3.5.0',\n                    's3transfer>=0.2.0,<0.3.0']\n\n\nif sys.version_info[:2] == (2, 6):\n    # For python2.6 we have to require argparse since it\n    # was not in stdlib until 2.7.\n    install_requires.append('argparse>=1.1')\n\n    # For Python 2.6, we have to require a different verion of PyYAML since the latest\n    # versions dropped support for Python 2.6.\n    install_requires.append('PyYAML>=3.10,<=3.13')\n\n    # Colorama removed support for EOL pythons.\n    install_requires.append('colorama>=0.2.5,<=0.3.9')\nelif sys.version_info[:2] == (3, 3):\n    install_requires.append('PyYAML>=3.10,<=3.13')\n    # Colorama removed support for EOL pythons.\n    install_requires.append('colorama>=0.2.5,<=0.3.9')\nelse:\n    install_requires.append('PyYAML>=3.10,<5.3')\n    install_requires.append('colorama>=0.2.5,<0.4.2')\n\n\nsetup_options = dict(\n    name='awscli',\n    version=find_version(\"awscli\", \"__init__.py\"),\n    description='Universal Command Line Environment for AWS.',\n    long_description=read('README.rst'),\n    author='Amazon Web Services',\n    url='http://aws.amazon.com/cli/',\n    scripts=['bin/aws', 'bin/aws.cmd',\n             'bin/aws_completer', 'bin/aws_zsh_completer.sh',\n             'bin/aws_bash_completer'],\n    packages=find_packages(exclude=['tests*']),\n    package_data={'awscli': ['data/*.json', 'examples/*/*.rst',\n                             'examples/*/*.txt', 'examples/*/*/*.txt',\n                             'examples/*/*/*.rst', 'topics/*.rst',\n                             'topics/*.json']},\n    install_requires=install_requires,\n    extras_require={\n        ':python_version==\"2.6\"': [\n            'argparse>=1.1',\n        ]\n    },\n    license=\"Apache License 2.0\",\n    classifiers=[\n        'Development Status :: 5 - Production/Stable',\n        'Intended Audience :: Developers',\n        'Intended Audience :: System Administrators',\n        'Natural Language :: English',\n        'License :: OSI Approved :: Apache Software License',\n        'Programming Language :: Python',\n        'Programming Language :: Python :: 2',\n        'Programming Language :: Python :: 2.6',\n        'Programming Language :: Python :: 2.7',\n        'Programming Language :: Python :: 3',\n        'Programming Language :: Python :: 3.3',\n        'Programming Language :: Python :: 3.4',\n        'Programming Language :: Python :: 3.5',\n        'Programming Language :: Python :: 3.6',\n        'Programming Language :: Python :: 3.7',\n    ],\n)\n\nif 'py2exe' in sys.argv:\n    # This will actually give us a py2exe command.\n    import py2exe\n    # And we have some py2exe specific options.\n    setup_options['options'] = {\n        'py2exe': {\n            'optimize': 0,\n            'skip_archive': True,\n            'dll_excludes': ['crypt32.dll'],\n            'packages': ['docutils', 'urllib', 'httplib', 'HTMLParser',\n                         'awscli', 'ConfigParser', 'xml.etree', 'pipes'],\n        }\n    }\n    setup_options['console'] = ['bin/aws']\n\n\nsetup(**setup_options)\n", "path": "setup.py"}]}