prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  Issue with Twisted and Python 3.4 
  Twisted had a patch 3 days ago and it's causing test suite to fail for py34 environment. 
  Twisted , according to their Readme, support Python 3.5+. This needs to be fixed if the builds need to pass
  
  </issue>
  <code>
  [start of setup.py]
  1 from os.path import dirname, join
  2 from pkg_resources import parse_version
  3 from setuptools import setup, find_packages, __version__ as setuptools_version
  4 
  5 
  6 with open(join(dirname(__file__), 'scrapy/VERSION'), 'rb') as f:
  7     version = f.read().decode('ascii').strip()
  8 
  9 
  10 def has_environment_marker_platform_impl_support():
  11     """Code extracted from 'pytest/setup.py'
  12     https://github.com/pytest-dev/pytest/blob/7538680c/setup.py#L31
  13 
  14     The first known release to support environment marker with range operators
  15     it is 18.5, see:
  16     https://setuptools.readthedocs.io/en/latest/history.html#id235
  17     """
  18     return parse_version(setuptools_version) >= parse_version('18.5')
  19 
  20 
  21 extras_require = {}
  22 
  23 if has_environment_marker_platform_impl_support():
  24     extras_require[':platform_python_implementation == "PyPy"'] = [
  25         'PyPyDispatcher>=2.1.0',
  26     ]
  27 
  28 
  29 setup(
  30     name='Scrapy',
  31     version=version,
  32     url='https://scrapy.org',
  33     description='A high-level Web Crawling and Web Scraping framework',
  34     long_description=open('README.rst').read(),
  35     author='Scrapy developers',
  36     maintainer='Pablo Hoffman',
  37     maintainer_email='pablo@pablohoffman.com',
  38     license='BSD',
  39     packages=find_packages(exclude=('tests', 'tests.*')),
  40     include_package_data=True,
  41     zip_safe=False,
  42     entry_points={
  43         'console_scripts': ['scrapy = scrapy.cmdline:execute']
  44     },
  45     classifiers=[
  46         'Framework :: Scrapy',
  47         'Development Status :: 5 - Production/Stable',
  48         'Environment :: Console',
  49         'Intended Audience :: Developers',
  50         'License :: OSI Approved :: BSD License',
  51         'Operating System :: OS Independent',
  52         'Programming Language :: Python',
  53         'Programming Language :: Python :: 2',
  54         'Programming Language :: Python :: 2.7',
  55         'Programming Language :: Python :: 3',
  56         'Programming Language :: Python :: 3.4',
  57         'Programming Language :: Python :: 3.5',
  58         'Programming Language :: Python :: 3.6',
  59         'Programming Language :: Python :: 3.7',
  60         'Programming Language :: Python :: Implementation :: CPython',
  61         'Programming Language :: Python :: Implementation :: PyPy',
  62         'Topic :: Internet :: WWW/HTTP',
  63         'Topic :: Software Development :: Libraries :: Application Frameworks',
  64         'Topic :: Software Development :: Libraries :: Python Modules',
  65     ],
  66     python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*',
  67     install_requires=[
  68         'Twisted>=13.1.0',
  69         'w3lib>=1.17.0',
  70         'queuelib',
  71         'lxml',
  72         'pyOpenSSL',
  73         'cssselect>=0.9',
  74         'six>=1.5.2',
  75         'parsel>=1.5',
  76         'PyDispatcher>=2.0.5',
  77         'service_identity',
  78     ],
  79     extras_require=extras_require,
  80 )
  81
  [end of setup.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/setup.py b/setup.py
  --- a/setup.py
  +++ b/setup.py
  @@ -65,7 +65,8 @@
       ],
       python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*',
       install_requires=[
  -        'Twisted>=13.1.0',
  +        'Twisted>=13.1.0;python_version!="3.4"',
  +        'Twisted>=13.1.0,<=19.2.0;python_version=="3.4"',
           'w3lib>=1.17.0',
           'queuelib',
           'lxml',
  
verification_info: {"golden_diff": "diff --git a/setup.py b/setup.py\n--- a/setup.py\n+++ b/setup.py\n@@ -65,7 +65,8 @@\n     ],\n     python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*',\n     install_requires=[\n-        'Twisted>=13.1.0',\n+        'Twisted>=13.1.0;python_version!=\"3.4\"',\n+        'Twisted>=13.1.0,<=19.2.0;python_version==\"3.4\"',\n         'w3lib>=1.17.0',\n         'queuelib',\n         'lxml',\n", "issue": "Issue with Twisted and Python 3.4 \nTwisted had a patch 3 days ago and it's causing test suite to fail for py34 environment. \r\nTwisted , according to their Readme, support Python 3.5+. This needs to be fixed if the builds need to pass\n", "before_files": [{"content": "from os.path import dirname, join\nfrom pkg_resources import parse_version\nfrom setuptools import setup, find_packages, __version__ as setuptools_version\n\n\nwith open(join(dirname(__file__), 'scrapy/VERSION'), 'rb') as f:\n    version = f.read().decode('ascii').strip()\n\n\ndef has_environment_marker_platform_impl_support():\n    \"\"\"Code extracted from 'pytest/setup.py'\n    https://github.com/pytest-dev/pytest/blob/7538680c/setup.py#L31\n\n    The first known release to support environment marker with range operators\n    it is 18.5, see:\n    https://setuptools.readthedocs.io/en/latest/history.html#id235\n    \"\"\"\n    return parse_version(setuptools_version) >= parse_version('18.5')\n\n\nextras_require = {}\n\nif has_environment_marker_platform_impl_support():\n    extras_require[':platform_python_implementation == \"PyPy\"'] = [\n        'PyPyDispatcher>=2.1.0',\n    ]\n\n\nsetup(\n    name='Scrapy',\n    version=version,\n    url='https://scrapy.org',\n    description='A high-level Web Crawling and Web Scraping framework',\n    long_description=open('README.rst').read(),\n    author='Scrapy developers',\n    maintainer='Pablo Hoffman',\n    maintainer_email='pablo@pablohoffman.com',\n    license='BSD',\n    packages=find_packages(exclude=('tests', 'tests.*')),\n    include_package_data=True,\n    zip_safe=False,\n    entry_points={\n        'console_scripts': ['scrapy = scrapy.cmdline:execute']\n    },\n    classifiers=[\n        'Framework :: Scrapy',\n        'Development Status :: 5 - Production/Stable',\n        'Environment :: Console',\n        'Intended Audience :: Developers',\n        'License :: OSI Approved :: BSD License',\n        'Operating System :: OS Independent',\n        'Programming Language :: Python',\n        'Programming Language :: Python :: 2',\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 :: 3.7',\n        'Programming Language :: Python :: Implementation :: CPython',\n        'Programming Language :: Python :: Implementation :: PyPy',\n        'Topic :: Internet :: WWW/HTTP',\n        'Topic :: Software Development :: Libraries :: Application Frameworks',\n        'Topic :: Software Development :: Libraries :: Python Modules',\n    ],\n    python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*',\n    install_requires=[\n        'Twisted>=13.1.0',\n        'w3lib>=1.17.0',\n        'queuelib',\n        'lxml',\n        'pyOpenSSL',\n        'cssselect>=0.9',\n        'six>=1.5.2',\n        'parsel>=1.5',\n        'PyDispatcher>=2.0.5',\n        'service_identity',\n    ],\n    extras_require=extras_require,\n)\n", "path": "setup.py"}]}