PipRequirement.py

def parse_requirements_file(requirements_file):
    """
    Parses the requirements out of the pip requirements.txt file

    :return:
        A list of the names of the packages found in requirements_file.
    """
    data = []
    for line_number, line in enumerate(requirements_file):
        if line.startswith('#'):
            continue
        try:
            res = Requirement.parse(line)
            req = {'package_name': res.project_name,
                   'version': res.specs[0][1],
                   'line_number': line_number,
                   }
            data.append(req)
        except (ValueError, RequirementParseError):
            pass
    return data


def get_latest_version(package):
    """
    Gets the latest version available for the package.

    :return:
        A string with the latest version of the package.
    """
    pypi = xmlrpc_client.ServerProxy(PYPI_URL)
    return pypi.package_releases(package)[0]