prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  Great Expectations is still marked as Python 2 compatible
  It looks like running `pip install great_expectations==0.9.7` in a Python 2 environment starts working, before failing when pulling `marshmallow`. This is expected since this PR: https://github.com/great-expectations/great_expectations/pull/1187 but on PyPI, GE is still marked as Python 2 compatible because of the `setup.py` file.
  
  I'm opening a PR that fixes this in a sec, but feel free to close if I'm missing something! :)
  
  </issue>
  <code>
  [start of setup.py]
  1 from setuptools import setup, find_packages
  2 import versioneer
  3 
  4 # Parse requirements.txt
  5 with open('requirements.txt') as f:
  6     required = f.read().splitlines()
  7 
  8 #try:
  9 #    import pypandoc
  10 #    long_description = pypandoc.convert_file('README.md', 'rst')
  11 #except (IOError, ImportError):
  12 long_description = 'Always know what to expect from your data. (See https://github.com/great-expectations/great_expectations for full description).'
  13 
  14 config = {
  15     'description': 'Always know what to expect from your data.',
  16     'author': 'The Great Expectations Team',
  17     'url': 'https://github.com/great-expectations/great_expectations',
  18     'author_email': 'team@greatexpectations.io',
  19     'version': versioneer.get_version(),
  20     'cmdclass': versioneer.get_cmdclass(),
  21     'install_requires': required,
  22     'extras_require': {
  23         'spark':  ['pyspark>=2.3.2'],
  24         'sqlalchemy': ['sqlalchemy>=1.2'],
  25         'airflow': ['apache-airflow[s3]>=1.9.0', 'boto3>=1.7.3']
  26     },
  27     'packages': find_packages(exclude=['docs', 'tests', 'examples']),
  28     'entry_points': {
  29         'console_scripts': ['great_expectations=great_expectations.cli:main']
  30     },
  31     'name': 'great_expectations',
  32     'long_description': long_description,
  33     'license': 'Apache-2.0',
  34     'keywords': 'data science testing pipeline data quality dataquality validation datavalidation',
  35     'include_package_data': True,
  36     'classifiers': [
  37         'Development Status :: 4 - Beta',
  38         'Intended Audience :: Developers',
  39         'Intended Audience :: Science/Research',
  40         'Intended Audience :: Other Audience',
  41         'Topic :: Scientific/Engineering',
  42         'Topic :: Software Development',
  43         'Topic :: Software Development :: Testing',
  44         'License :: OSI Approved :: Apache Software License',
  45         'Programming Language :: Python :: 2',
  46         'Programming Language :: Python :: 2.7',
  47         'Programming Language :: Python :: 3',
  48         'Programming Language :: Python :: 3.6',
  49         'Programming Language :: Python :: 3.7',
  50     ]
  51 }
  52 
  53 setup(**config)
  54
  [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
  @@ -42,8 +42,6 @@
           'Topic :: Software Development',
           'Topic :: Software Development :: Testing',
           'License :: OSI Approved :: Apache Software License',
  -        'Programming Language :: Python :: 2',
  -        'Programming Language :: Python :: 2.7',
           'Programming Language :: Python :: 3',
           'Programming Language :: Python :: 3.6',
           'Programming Language :: Python :: 3.7',
  
verification_info: {"golden_diff": "diff --git a/setup.py b/setup.py\n--- a/setup.py\n+++ b/setup.py\n@@ -42,8 +42,6 @@\n         'Topic :: Software Development',\n         'Topic :: Software Development :: Testing',\n         'License :: OSI Approved :: Apache Software License',\n-        'Programming Language :: Python :: 2',\n-        'Programming Language :: Python :: 2.7',\n         'Programming Language :: Python :: 3',\n         'Programming Language :: Python :: 3.6',\n         'Programming Language :: Python :: 3.7',\n", "issue": "Great Expectations is still marked as Python 2 compatible\nIt looks like running `pip install great_expectations==0.9.7` in a Python 2 environment starts working, before failing when pulling `marshmallow`. This is expected since this PR: https://github.com/great-expectations/great_expectations/pull/1187 but on PyPI, GE is still marked as Python 2 compatible because of the `setup.py` file.\r\n\r\nI'm opening a PR that fixes this in a sec, but feel free to close if I'm missing something! :)\n", "before_files": [{"content": "from setuptools import setup, find_packages\nimport versioneer\n\n# Parse requirements.txt\nwith open('requirements.txt') as f:\n    required = f.read().splitlines()\n\n#try:\n#    import pypandoc\n#    long_description = pypandoc.convert_file('README.md', 'rst')\n#except (IOError, ImportError):\nlong_description = 'Always know what to expect from your data. (See https://github.com/great-expectations/great_expectations for full description).'\n\nconfig = {\n    'description': 'Always know what to expect from your data.',\n    'author': 'The Great Expectations Team',\n    'url': 'https://github.com/great-expectations/great_expectations',\n    'author_email': 'team@greatexpectations.io',\n    'version': versioneer.get_version(),\n    'cmdclass': versioneer.get_cmdclass(),\n    'install_requires': required,\n    'extras_require': {\n        'spark':  ['pyspark>=2.3.2'],\n        'sqlalchemy': ['sqlalchemy>=1.2'],\n        'airflow': ['apache-airflow[s3]>=1.9.0', 'boto3>=1.7.3']\n    },\n    'packages': find_packages(exclude=['docs', 'tests', 'examples']),\n    'entry_points': {\n        'console_scripts': ['great_expectations=great_expectations.cli:main']\n    },\n    'name': 'great_expectations',\n    'long_description': long_description,\n    'license': 'Apache-2.0',\n    'keywords': 'data science testing pipeline data quality dataquality validation datavalidation',\n    'include_package_data': True,\n    'classifiers': [\n        'Development Status :: 4 - Beta',\n        'Intended Audience :: Developers',\n        'Intended Audience :: Science/Research',\n        'Intended Audience :: Other Audience',\n        'Topic :: Scientific/Engineering',\n        'Topic :: Software Development',\n        'Topic :: Software Development :: Testing',\n        'License :: OSI Approved :: Apache Software License',\n        'Programming Language :: Python :: 2',\n        'Programming Language :: Python :: 2.7',\n        'Programming Language :: Python :: 3',\n        'Programming Language :: Python :: 3.6',\n        'Programming Language :: Python :: 3.7',\n    ]\n}\n\nsetup(**config)\n", "path": "setup.py"}]}