Yields a generator of requirements as defined by the REQUIRE_PATH which
    should point to a requirements.txt output by `pip freeze`.

def get_requires(path=REQUIRE_PATH):
    """
    Yields a generator of requirements as defined by the REQUIRE_PATH which
    should point to a requirements.txt output by `pip freeze`.
    """
    for line in read(path).splitlines():
        line = line.strip()
        if line and not line.startswith('#'):
            yield line