old_contents: #!/usr/bin/env python
  # Copyright 2019 The TensorNetwork Developers
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     https://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  from setuptools import find_packages, setup
  
  # This reads the __version__ variable from tensornetwork/version.py
  with open('tensornetwork/version.py') as f:
    exec(f.read(), globals())
  
  description = ('A high level tensor network API for tensorflow.')
  
  # Reading long Description from README.md file.
  with open("README.md", "r") as fh:
    long_description = fh.read()
  
  # Read in requirements
  requirements = [
      requirement.strip() for requirement in open('requirements.txt').readlines()
  ]
  
  setup(
      name='tensornetwork',
      version=__version__,
      url='http://github.com/google/TensorNetwork',
      author='The TensorNetwork Developers',
      author_email='martin.ganahl@gmail.com',
      python_requires=('>=3.6.0'),
      install_requires=requirements,
      license='Apache 2.0',
      description=description,
      long_description=long_description,
      long_description_content_type="text/markdown",
      packages=find_packages(),
  )
  
new_contents: #!/usr/bin/env python
  # Copyright 2019 The TensorNetwork Developers
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     https://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  from setuptools import find_packages, setup
  
  # This reads the __version__ variable from tensornetwork/version.py
  with open('tensornetwork/version.py') as f:
    exec(f.read(), globals())
  
  description = ('A high level tensor network API for '
                 'accelerated tensor network calculations.')
  
  # Reading long Description from README.md file.
  with open("README.md", "r") as fh:
    long_description = fh.read()
  
  # Read in requirements
  requirements = [
      requirement.strip() for requirement in open('requirements.txt').readlines()
  ]
  
  setup(
      name='tensornetwork',
      version=__version__,
      url='http://github.com/google/TensorNetwork',
      author='The TensorNetwork Developers',
      author_email='martin.ganahl@gmail.com',
      python_requires=('>=3.6.0'),
      install_requires=requirements,
      license='Apache 2.0',
      description=description,
      long_description=long_description,
      long_description_content_type="text/markdown",
      packages=find_packages(),
  )
  
subject: update description