old_contents: from setuptools import setup,find_packages
  
  setup (
    name = 'pymatgen',
    version = '1.0.3',
    packages = find_packages(),
  
    # Declare your packages' dependencies here, for eg:
  
    install_requires = ['numpy','scipy','matplotlib','PyCIFRW'],
  
    author = 'Shyue Ping Ong, Anubhav Jain, Michael Kocher, Dan Gunter',
    author_email = 'shyue@mit.edu, anubhavj@mit.edu, mpkocher@lbnl.gov, dkgunter@lbl.gov',
  
    summary = 'The Materials Project Python Library',
    url = 'www.materialsproject.org',
    license = '',
    long_description= 'pymatgen is a Python library for the Materials Project. It includes core structure definition and utilities, electronic structure objects, and convenient IO from VASP and CIF files.',
  
    # could also include long_description, download_url, classifiers, etc.
  )
  
new_contents: from setuptools import setup, find_packages
  
  setup (
    name = 'pymatgen',
    version = '1.0.3',
    packages = find_packages(),
  
    install_requires = ['numpy', 'scipy', 'matplotlib', 'PyCIFRW', 'PyYAML'],
  
    author = 'Shyue Ping Ong, Anubhav Jain, Michael Kocher, Dan Gunter',
    author_email = 'shyue@mit.edu, anubhavj@mit.edu, mpkocher@lbnl.gov, dkgunter@lbl.gov',
    maintainer = 'Shyue Ping Ong',
    summary = 'The Materials Project Python Library',
    url = 'www.materialsproject.org',
    license = 'MIT',
    long_description = 'pymatgen is a Python library for the Materials Project. It includes core structure definition and utilities, electronic structure objects, and convenient IO from VASP and CIF files.',
    keywords = ["vasp", "materials", "project", "electronic", "structure"],
    classifiers = [
          "Programming Language :: Python",
          "Programming Language :: Python :: 2.7.2",
          "Development Status :: 4 - Beta",
          "Intended Audience :: Scientists, Developers",
          "License :: MIT License",
          "Operating System :: OS Independent",
          "Topic :: Software Development :: Libraries :: Python Modules",
          "Topic :: Science :: Materials Science",
    ],
    download_url = "http://github.com/downloads/CederGroupMIT/pymatgen_repo/pymatgen_1.0.3.tar.gz",
  )
  
  
subject: Add a bunch of additional fields to setup.py, including PyYAML dependency.