prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  Support Python versions lower than 2.7, too
  
  
  </issue>
  <code>
  [start of setup.py]
  1 """
  2 pip-tools keeps your pinned dependencies fresh.
  3 """
  4 import sys
  5 from setuptools import setup
  6 
  7 
  8 setup(
  9     name='pip-tools',
  10     version='0.2',
  11     url='https://github.com/nvie/pip-tools/',
  12     license='BSD',
  13     author='Vincent Driessen',
  14     author_email='vincent@3rdcloud.com',
  15     description=__doc__,
  16     #packages=[],
  17     scripts=['bin/pip-review', 'bin/pip-dump'],
  18     #include_package_data=True,
  19     zip_safe=False,
  20     platforms='any',
  21     #install_requires=[],
  22     classifiers=[
  23         # As from http://pypi.python.org/pypi?%3Aaction=list_classifiers
  24         #'Development Status :: 1 - Planning',
  25         #'Development Status :: 2 - Pre-Alpha',
  26         #'Development Status :: 3 - Alpha',
  27         'Development Status :: 4 - Beta',
  28         #'Development Status :: 5 - Production/Stable',
  29         #'Development Status :: 6 - Mature',
  30         #'Development Status :: 7 - Inactive',
  31         'Intended Audience :: Developers',
  32         'Intended Audience :: System Administrators',
  33         'License :: OSI Approved :: BSD License',
  34         'Operating System :: OS Independent',
  35         'Topic :: System :: Systems Administration',
  36     ]
  37 )
  38
  [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
  @@ -18,7 +18,7 @@
       #include_package_data=True,
       zip_safe=False,
       platforms='any',
  -    #install_requires=[],
  +    install_requires=['argparse==1.2.1'],  # needed for python 2.6
       classifiers=[
           # As from http://pypi.python.org/pypi?%3Aaction=list_classifiers
           #'Development Status :: 1 - Planning',
  
verification_info: {"golden_diff": "diff --git a/setup.py b/setup.py\n--- a/setup.py\n+++ b/setup.py\n@@ -18,7 +18,7 @@\n     #include_package_data=True,\n     zip_safe=False,\n     platforms='any',\n-    #install_requires=[],\n+    install_requires=['argparse==1.2.1'],  # needed for python 2.6\n     classifiers=[\n         # As from http://pypi.python.org/pypi?%3Aaction=list_classifiers\n         #'Development Status :: 1 - Planning',\n", "issue": "Support Python versions lower than 2.7, too\n\n", "before_files": [{"content": "\"\"\"\npip-tools keeps your pinned dependencies fresh.\n\"\"\"\nimport sys\nfrom setuptools import setup\n\n\nsetup(\n    name='pip-tools',\n    version='0.2',\n    url='https://github.com/nvie/pip-tools/',\n    license='BSD',\n    author='Vincent Driessen',\n    author_email='vincent@3rdcloud.com',\n    description=__doc__,\n    #packages=[],\n    scripts=['bin/pip-review', 'bin/pip-dump'],\n    #include_package_data=True,\n    zip_safe=False,\n    platforms='any',\n    #install_requires=[],\n    classifiers=[\n        # As from http://pypi.python.org/pypi?%3Aaction=list_classifiers\n        #'Development Status :: 1 - Planning',\n        #'Development Status :: 2 - Pre-Alpha',\n        #'Development Status :: 3 - Alpha',\n        'Development Status :: 4 - Beta',\n        #'Development Status :: 5 - Production/Stable',\n        #'Development Status :: 6 - Mature',\n        #'Development Status :: 7 - Inactive',\n        'Intended Audience :: Developers',\n        'Intended Audience :: System Administrators',\n        'License :: OSI Approved :: BSD License',\n        'Operating System :: OS Independent',\n        'Topic :: System :: Systems Administration',\n    ]\n)\n", "path": "setup.py"}]}