(url)
return None
Look for VCS schemes in the URL.

    Returns the matched VCS scheme, or None if there's no match.
Look for VCS schemes in the URL.
Look for VCS schemes in the URL .
def _match_vcs_scheme(url):
    # type: (str) -> Optional[str]
    """Look for VCS schemes in the URL.

    Returns the matched VCS scheme, or None if there's no match.
    """
    from pip._internal.vcs import vcs
    for scheme in vcs.schemes:
        if url.lower().startswith(scheme) and url[len(scheme)] in '+:':
            return scheme
    return None
def _match_vcs_scheme ( url ) : # type: (str) -> Optional[str] from pip . _internal . vcs import vcs for scheme in vcs . schemes : if url . lower ( ) . startswith ( scheme ) and url [ len ( scheme ) ] in '+:' : return scheme return None