def get_pyyaml(version):
    filename = f'PyYAML-{version}.tar.gz'
    url = f'https://pypi.python.org/packages/source/P/PyYAML/{filename}'
    return get_extlib_file(filename, url)
def get_pyyaml(version):
    filename = f'PyYAML-{version}.tar.gz'
    url = f'https://pypi.python.org/packages/source/P/PyYAML/{filename}'
    return get_extlib_file(filename, url)