capybara/virtualenv/lib/python2.7/site-packages/pip/req/req_file.py
def ignore_comments(iterator):
    """
    Strips and filters empty or commented lines.
    """
    for line in iterator:
        line = COMMENT_RE.sub('', line)
        line = line.strip()
        if line:
            yield line
def ignore_comments(iterator):
    """
    Strips and filters empty or commented lines.
    """
    for line in iterator:
        line = COMMENT_RE.sub('', line)
        line = line.strip()
        if line:
            yield line
Strips and filters empty or commented lines.