old_contents: from setuptools import setup
  
  setup(name='pandas_io',
        version='0.0',
        description='Read and save DataFrames using various additional data formats',
        url='http://github.com/ibab/pandas-io',
        author='Igor Babuschkin',
        author_email='igor@babuschk.in',
        license='BSD3',
        install_requires=[
            'numpy',
            'pandas',
        ],
        packages=['pandas.io.external'],
        zip_safe=False)
  
new_contents: from setuptools import setup
  
  setup(name='pandas-io',
        version='0.0',
        description='Read and save DataFrames using various additional data formats',
        url='http://github.com/ibab/pandas-io',
        author='Igor Babuschkin',
        author_email='igor@babuschk.in',
        license='BSD3',
        install_requires=[
            'numpy',
            'pandas',
        ],
        packages=['pandas.io.external'],
        zip_safe=False)
  
subject: Change _ to -