old_contents: import glob
  import os
  import re
  import shutil
  from setuptools import setup, Extension
  
  # Work from directory containing setup.py
  os.chdir(os.path.abspath(os.path.dirname(__file__)))
  
  # Get version number
  with open("version.txt") as f:
      version = f.read().strip()
  
  ext = [
      Extension(
          "coho.__init__",
          define_macros=[("VERSION", '"{}"'.format(version))],
          include_dirs=["src"],
          sources=["coho/__init__.c"],
      ),
      Extension(
          "coho.smiles",
          include_dirs=["src"],
          sources=["coho/smiles.c", "src/smiles.c", "src/compat.c"],
      ),
  ]
  
  setup(
      name="coho",
      version=version,
      packages=["coho"],
      ext_modules=ext,
      author="Ben Cornett",
      author_email="ben@lantern.is",
      description="SMILES parser",
      license="ISC",
      package_data={"coho": ["py.typed", "*.pyi"]},
      keywords="smiles opensmiles cheminformatics",
      python_requires=">= 3.4",
      url="https://github.com/cornett/coho",
      include_package_data=True,
  )
  
new_contents: import glob
  import os
  import re
  import shutil
  from setuptools import setup, Extension
  
  # Work from directory containing setup.py
  os.chdir(os.path.abspath(os.path.dirname(__file__)))
  
  # Get version number
  with open("version.txt") as f:
      version = f.read().strip()
  
  ext = [
      Extension(
          "coho.__init__",
          define_macros=[("VERSION", '"{}"'.format(version))],
          include_dirs=["src"],
          sources=["coho/__init__.c"],
      ),
      Extension(
          "coho.smiles",
          include_dirs=["src"],
          sources=["coho/smiles.c", "src/smiles.c", "src/compat.c"],
      ),
  ]
  
  setup(
      name="coho",
      version=version,
      packages=["coho"],
      ext_modules=ext,
      author="Ben Cornett",
      author_email="ben@lantern.is",
      description="SMILES parser",
      license="ISC",
      package_data={"coho": ["py.typed", "*.pyi"]},
      keywords="smiles opensmiles cheminformatics",
      python_requires=">= 3.4",
      url="https://github.com/cornett/coho",
      include_package_data=True,
      classifiers=[
          "Intended Audience :: Developers",
          "Intended Audience :: Science/Research",
          "License :: OSI Approved :: ISC License (ISCL)",
          "Operating System :: MacOS",
          "Operating System :: POSIX :: BSD",
          "Operating System :: POSIX :: Linux",
          "Programming Language :: C",
          "Programming Language :: Python :: 3.4",
          "Programming Language :: Python :: 3.5",
          "Programming Language :: Python :: 3.6",
          "Programming Language :: Python :: 3.7",
          "Programming Language :: Python :: Implementation :: CPython",
          "Topic :: Scientific/Engineering :: Bio-Informatics",
          "Topic :: Scientific/Engineering :: Chemistry",
          "Topic :: Software Development",
      ],
  )
  
subject: Add pypi classifiers