prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  TypeError thrown when trying to import hypothesis in 3.44.21
  hypothesis (3.44.21)
  
  In [4]: from hypothesis import given
  ---------------------------------------------------------------------------
  TypeError                                 Traceback (most recent call last)
  <ipython-input-4-4ce9639ca03b> in <module>()
  ----> 1 from hypothesis import given
  
  /usr/local/lib/python2.7/dist-packages/hypothesis/__init__.py in <module>()
       29 from hypothesis.version import __version_info__, __version__
       30 from hypothesis.control import assume, note, reject, event
  ---> 31 from hypothesis.core import given, find, example, seed, reproduce_failure, \
       32     PrintSettings
       33 from hypothesis.utils.conventions import infer
  
  /usr/local/lib/python2.7/dist-packages/hypothesis/core.py in <module>()
       35 from coverage.collector import Collector
       36
  ---> 37 import hypothesis.strategies as st
       38 from hypothesis import __version__
       39 from hypothesis.errors import Flaky, Timeout, NoSuchExample, \
  
  /usr/local/lib/python2.7/dist-packages/hypothesis/strategies.py in <module>()
       30 from hypothesis.control import assume
       31 from hypothesis._settings import note_deprecation
  ---> 32 from hypothesis.internal.cache import LRUReusedCache
       33 from hypothesis.searchstrategy import SearchStrategy
       34 from hypothesis.internal.compat import gcd, ceil, floor, hrange, \
  
  /usr/local/lib/python2.7/dist-packages/hypothesis/internal/cache.py in <module>()
       21
       22
  ---> 23 @attr.s(slots=True)
       24 class Entry(object):
       25     key = attr.ib()
  
  TypeError: attributes() got an unexpected keyword argument 'slots'
  
  --- 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 # coding=utf-8
  2 #
  3 # This file is part of Hypothesis, which may be found at
  4 # https://github.com/HypothesisWorks/hypothesis-python
  5 #
  6 # Most of this work is copyright (C) 2013-2018 David R. MacIver
  7 # (david@drmaciver.com), but it contains contributions by others. See
  8 # CONTRIBUTING.rst for a full list of people who may hold copyright, and
  9 # consult the git log if you need to determine who owns an individual
  10 # contribution.
  11 #
  12 # This Source Code Form is subject to the terms of the Mozilla Public License,
  13 # v. 2.0. If a copy of the MPL was not distributed with this file, You can
  14 # obtain one at http://mozilla.org/MPL/2.0/.
  15 #
  16 # END HEADER
  17 
  18 from __future__ import division, print_function, absolute_import
  19 
  20 import os
  21 import sys
  22 
  23 import setuptools
  24 
  25 
  26 def local_file(name):
  27     return os.path.relpath(os.path.join(os.path.dirname(__file__), name))
  28 
  29 
  30 SOURCE = local_file('src')
  31 README = local_file('README.rst')
  32 
  33 
  34 # Assignment to placate pyflakes. The actual version is from the exec that
  35 # follows.
  36 __version__ = None
  37 
  38 with open(local_file('src/hypothesis/version.py')) as o:
  39     exec(o.read())
  40 
  41 assert __version__ is not None
  42 
  43 
  44 extras = {
  45     'datetime':  ['pytz'],
  46     'pytz':  ['pytz'],
  47     'fakefactory': ['Faker>=0.7'],
  48     'numpy': ['numpy>=1.9.0'],
  49     'pytest': ['pytest>=2.8.0'],
  50 }
  51 
  52 # Django 2 only supports Python 3, but doesn't have any python_requires
  53 # markers in its setup.py --- so "pip install django" just fails in
  54 # Python 2.  So rather than relying on pip, we pin the version of
  55 # Django on Python 2 ourselves.
  56 #
  57 # See https://github.com/HypothesisWorks/hypothesis-python/pull/1008
  58 if sys.version_info[0] < 3:
  59     django_major_pin = '<2'
  60 else:
  61     django_major_pin = '<3'
  62 
  63 # We only support the releases of Django that are supported by the Django
  64 # core team.  See https://www.djangoproject.com/download/#supported-versions
  65 #
  66 # New versions of setuptools allow us to set very precise pins; older versions
  67 # of setuptools are coarser.
  68 major_setuptools_version = int(setuptools.__version__.split('.')[0])
  69 if major_setuptools_version >= 8:
  70     django_minor_pin = '>=1.8,!=1.9.*,!=1.10.*'
  71 else:
  72     django_minor_pin = '>=1.8'
  73 
  74 django_pin = 'django%s,%s' % (django_minor_pin, django_major_pin)
  75 extras['django'] = ['pytz', django_pin]
  76 
  77 extras['faker'] = extras['fakefactory']
  78 
  79 extras['all'] = sorted(sum(extras.values(), []))
  80 
  81 extras[":python_version == '2.7'"] = ['enum34']
  82 
  83 install_requires = ['attrs', 'coverage']
  84 
  85 if sys.version_info[0] < 3:
  86     install_requires.append('enum34')
  87 
  88 setuptools.setup(
  89     name='hypothesis',
  90     version=__version__,
  91     author='David R. MacIver',
  92     author_email='david@drmaciver.com',
  93     packages=setuptools.find_packages(SOURCE),
  94     package_dir={'': SOURCE},
  95     url='https://github.com/HypothesisWorks/hypothesis-python',
  96     license='MPL v2',
  97     description='A library for property based testing',
  98     zip_safe=False,
  99     extras_require=extras,
  100     install_requires=install_requires,
  101     python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*',
  102     classifiers=[
  103         'Development Status :: 5 - Production/Stable',
  104         'Intended Audience :: Developers',
  105         'License :: OSI Approved :: Mozilla Public License 2.0 (MPL 2.0)',
  106         'Operating System :: Unix',
  107         'Operating System :: POSIX',
  108         'Operating System :: Microsoft :: Windows',
  109         'Programming Language :: Python',
  110         'Programming Language :: Python :: 2.7',
  111         'Programming Language :: Python :: 3',
  112         'Programming Language :: Python :: 3.4',
  113         'Programming Language :: Python :: 3.5',
  114         'Programming Language :: Python :: 3.6',
  115         'Programming Language :: Python :: Implementation :: CPython',
  116         'Programming Language :: Python :: Implementation :: PyPy',
  117         'Topic :: Software Development :: Testing',
  118     ],
  119     entry_points={
  120         'pytest11': ['hypothesispytest = hypothesis.extra.pytestplugin'],
  121     },
  122     long_description=open(README).read(),
  123 )
  124
  ```
  --- 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/setup.py b/setup.py
  --- a/setup.py
  +++ b/setup.py
  @@ -80,7 +80,7 @@
   
   extras[":python_version == '2.7'"] = ['enum34']
   
  -install_requires = ['attrs', 'coverage']
  +install_requires = ['attrs>=16.0.0', 'coverage']
   
   if sys.version_info[0] < 3:
       install_requires.append('enum34')
  
verification_info: {"golden_diff": "diff --git a/setup.py b/setup.py\n--- a/setup.py\n+++ b/setup.py\n@@ -80,7 +80,7 @@\n \n extras[\":python_version == '2.7'\"] = ['enum34']\n \n-install_requires = ['attrs', 'coverage']\n+install_requires = ['attrs>=16.0.0', 'coverage']\n \n if sys.version_info[0] < 3:\n     install_requires.append('enum34')\n", "issue": "TypeError thrown when trying to import hypothesis in 3.44.21\nhypothesis (3.44.21)\r\n\r\nIn [4]: from hypothesis import given\r\n---------------------------------------------------------------------------\r\nTypeError                                 Traceback (most recent call last)\r\n<ipython-input-4-4ce9639ca03b> in <module>()\r\n----> 1 from hypothesis import given\r\n\r\n/usr/local/lib/python2.7/dist-packages/hypothesis/__init__.py in <module>()\r\n     29 from hypothesis.version import __version_info__, __version__\r\n     30 from hypothesis.control import assume, note, reject, event\r\n---> 31 from hypothesis.core import given, find, example, seed, reproduce_failure, \\\r\n     32     PrintSettings\r\n     33 from hypothesis.utils.conventions import infer\r\n\r\n/usr/local/lib/python2.7/dist-packages/hypothesis/core.py in <module>()\r\n     35 from coverage.collector import Collector\r\n     36\r\n---> 37 import hypothesis.strategies as st\r\n     38 from hypothesis import __version__\r\n     39 from hypothesis.errors import Flaky, Timeout, NoSuchExample, \\\r\n\r\n/usr/local/lib/python2.7/dist-packages/hypothesis/strategies.py in <module>()\r\n     30 from hypothesis.control import assume\r\n     31 from hypothesis._settings import note_deprecation\r\n---> 32 from hypothesis.internal.cache import LRUReusedCache\r\n     33 from hypothesis.searchstrategy import SearchStrategy\r\n     34 from hypothesis.internal.compat import gcd, ceil, floor, hrange, \\\r\n\r\n/usr/local/lib/python2.7/dist-packages/hypothesis/internal/cache.py in <module>()\r\n     21\r\n     22\r\n---> 23 @attr.s(slots=True)\r\n     24 class Entry(object):\r\n     25     key = attr.ib()\r\n\r\nTypeError: attributes() got an unexpected keyword argument 'slots'\n", "before_files": [{"content": "# coding=utf-8\n#\n# This file is part of Hypothesis, which may be found at\n# https://github.com/HypothesisWorks/hypothesis-python\n#\n# Most of this work is copyright (C) 2013-2018 David R. MacIver\n# (david@drmaciver.com), but it contains contributions by others. See\n# CONTRIBUTING.rst for a full list of people who may hold copyright, and\n# consult the git log if you need to determine who owns an individual\n# contribution.\n#\n# This Source Code Form is subject to the terms of the Mozilla Public License,\n# v. 2.0. If a copy of the MPL was not distributed with this file, You can\n# obtain one at http://mozilla.org/MPL/2.0/.\n#\n# END HEADER\n\nfrom __future__ import division, print_function, absolute_import\n\nimport os\nimport sys\n\nimport setuptools\n\n\ndef local_file(name):\n    return os.path.relpath(os.path.join(os.path.dirname(__file__), name))\n\n\nSOURCE = local_file('src')\nREADME = local_file('README.rst')\n\n\n# Assignment to placate pyflakes. The actual version is from the exec that\n# follows.\n__version__ = None\n\nwith open(local_file('src/hypothesis/version.py')) as o:\n    exec(o.read())\n\nassert __version__ is not None\n\n\nextras = {\n    'datetime':  ['pytz'],\n    'pytz':  ['pytz'],\n    'fakefactory': ['Faker>=0.7'],\n    'numpy': ['numpy>=1.9.0'],\n    'pytest': ['pytest>=2.8.0'],\n}\n\n# Django 2 only supports Python 3, but doesn't have any python_requires\n# markers in its setup.py --- so \"pip install django\" just fails in\n# Python 2.  So rather than relying on pip, we pin the version of\n# Django on Python 2 ourselves.\n#\n# See https://github.com/HypothesisWorks/hypothesis-python/pull/1008\nif sys.version_info[0] < 3:\n    django_major_pin = '<2'\nelse:\n    django_major_pin = '<3'\n\n# We only support the releases of Django that are supported by the Django\n# core team.  See https://www.djangoproject.com/download/#supported-versions\n#\n# New versions of setuptools allow us to set very precise pins; older versions\n# of setuptools are coarser.\nmajor_setuptools_version = int(setuptools.__version__.split('.')[0])\nif major_setuptools_version >= 8:\n    django_minor_pin = '>=1.8,!=1.9.*,!=1.10.*'\nelse:\n    django_minor_pin = '>=1.8'\n\ndjango_pin = 'django%s,%s' % (django_minor_pin, django_major_pin)\nextras['django'] = ['pytz', django_pin]\n\nextras['faker'] = extras['fakefactory']\n\nextras['all'] = sorted(sum(extras.values(), []))\n\nextras[\":python_version == '2.7'\"] = ['enum34']\n\ninstall_requires = ['attrs', 'coverage']\n\nif sys.version_info[0] < 3:\n    install_requires.append('enum34')\n\nsetuptools.setup(\n    name='hypothesis',\n    version=__version__,\n    author='David R. MacIver',\n    author_email='david@drmaciver.com',\n    packages=setuptools.find_packages(SOURCE),\n    package_dir={'': SOURCE},\n    url='https://github.com/HypothesisWorks/hypothesis-python',\n    license='MPL v2',\n    description='A library for property based testing',\n    zip_safe=False,\n    extras_require=extras,\n    install_requires=install_requires,\n    python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*',\n    classifiers=[\n        'Development Status :: 5 - Production/Stable',\n        'Intended Audience :: Developers',\n        'License :: OSI Approved :: Mozilla Public License 2.0 (MPL 2.0)',\n        'Operating System :: Unix',\n        'Operating System :: POSIX',\n        'Operating System :: Microsoft :: Windows',\n        'Programming Language :: Python',\n        'Programming Language :: Python :: 2.7',\n        'Programming Language :: Python :: 3',\n        'Programming Language :: Python :: 3.4',\n        'Programming Language :: Python :: 3.5',\n        'Programming Language :: Python :: 3.6',\n        'Programming Language :: Python :: Implementation :: CPython',\n        'Programming Language :: Python :: Implementation :: PyPy',\n        'Topic :: Software Development :: Testing',\n    ],\n    entry_points={\n        'pytest11': ['hypothesispytest = hypothesis.extra.pytestplugin'],\n    },\n    long_description=open(README).read(),\n)\n", "path": "setup.py"}], "after_files": [{"content": "# coding=utf-8\n#\n# This file is part of Hypothesis, which may be found at\n# https://github.com/HypothesisWorks/hypothesis-python\n#\n# Most of this work is copyright (C) 2013-2018 David R. MacIver\n# (david@drmaciver.com), but it contains contributions by others. See\n# CONTRIBUTING.rst for a full list of people who may hold copyright, and\n# consult the git log if you need to determine who owns an individual\n# contribution.\n#\n# This Source Code Form is subject to the terms of the Mozilla Public License,\n# v. 2.0. If a copy of the MPL was not distributed with this file, You can\n# obtain one at http://mozilla.org/MPL/2.0/.\n#\n# END HEADER\n\nfrom __future__ import division, print_function, absolute_import\n\nimport os\nimport sys\n\nimport setuptools\n\n\ndef local_file(name):\n    return os.path.relpath(os.path.join(os.path.dirname(__file__), name))\n\n\nSOURCE = local_file('src')\nREADME = local_file('README.rst')\n\n\n# Assignment to placate pyflakes. The actual version is from the exec that\n# follows.\n__version__ = None\n\nwith open(local_file('src/hypothesis/version.py')) as o:\n    exec(o.read())\n\nassert __version__ is not None\n\n\nextras = {\n    'datetime':  ['pytz'],\n    'pytz':  ['pytz'],\n    'fakefactory': ['Faker>=0.7'],\n    'numpy': ['numpy>=1.9.0'],\n    'pytest': ['pytest>=2.8.0'],\n}\n\n# Django 2 only supports Python 3, but doesn't have any python_requires\n# markers in its setup.py --- so \"pip install django\" just fails in\n# Python 2.  So rather than relying on pip, we pin the version of\n# Django on Python 2 ourselves.\n#\n# See https://github.com/HypothesisWorks/hypothesis-python/pull/1008\nif sys.version_info[0] < 3:\n    django_major_pin = '<2'\nelse:\n    django_major_pin = '<3'\n\n# We only support the releases of Django that are supported by the Django\n# core team.  See https://www.djangoproject.com/download/#supported-versions\n#\n# New versions of setuptools allow us to set very precise pins; older versions\n# of setuptools are coarser.\nmajor_setuptools_version = int(setuptools.__version__.split('.')[0])\nif major_setuptools_version >= 8:\n    django_minor_pin = '>=1.8,!=1.9.*,!=1.10.*'\nelse:\n    django_minor_pin = '>=1.8'\n\ndjango_pin = 'django%s,%s' % (django_minor_pin, django_major_pin)\nextras['django'] = ['pytz', django_pin]\n\nextras['faker'] = extras['fakefactory']\n\nextras['all'] = sorted(sum(extras.values(), []))\n\nextras[\":python_version == '2.7'\"] = ['enum34']\n\ninstall_requires = ['attrs>=16.0.0', 'coverage']\n\nif sys.version_info[0] < 3:\n    install_requires.append('enum34')\n\nsetuptools.setup(\n    name='hypothesis',\n    version=__version__,\n    author='David R. MacIver',\n    author_email='david@drmaciver.com',\n    packages=setuptools.find_packages(SOURCE),\n    package_dir={'': SOURCE},\n    url='https://github.com/HypothesisWorks/hypothesis-python',\n    license='MPL v2',\n    description='A library for property based testing',\n    zip_safe=False,\n    extras_require=extras,\n    install_requires=install_requires,\n    python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*',\n    classifiers=[\n        'Development Status :: 5 - Production/Stable',\n        'Intended Audience :: Developers',\n        'License :: OSI Approved :: Mozilla Public License 2.0 (MPL 2.0)',\n        'Operating System :: Unix',\n        'Operating System :: POSIX',\n        'Operating System :: Microsoft :: Windows',\n        'Programming Language :: Python',\n        'Programming Language :: Python :: 2.7',\n        'Programming Language :: Python :: 3',\n        'Programming Language :: Python :: 3.4',\n        'Programming Language :: Python :: 3.5',\n        'Programming Language :: Python :: 3.6',\n        'Programming Language :: Python :: Implementation :: CPython',\n        'Programming Language :: Python :: Implementation :: PyPy',\n        'Topic :: Software Development :: Testing',\n    ],\n    entry_points={\n        'pytest11': ['hypothesispytest = hypothesis.extra.pytestplugin'],\n    },\n    long_description=open(README).read(),\n)\n", "path": "setup.py"}]}