def get_common_prefix(z):
    """Get common directory in a zip file if any."""
    name_list = z.namelist()
    if name_list and all(n.startswith(name_list[0]) for n in name_list[1:]):
        return name_list[0]
    return None
def get_common_prefix(z):
    
    name_list = z.namelist()
    if name_list and all(n.startswith(name_list[0]) for n in name_list[1:]):
        return name_list[0]
    return None
def get_common_prefix ( z ) : name_list = z . namelist ( ) if name_list and all ( n . startswith ( name_list [ 0 ] ) for n in name_list [ 1 : ] ) : return name_list [ 0 ] return None
Get common directory in a zip file if any.
Get common directory in a zip file if any .