def parse_num(source, start, charset):
    """Returns a first index>=start of chat not in charset"""
    while start < len(source) and source[start] in charset:
        start += 1
    return start
def parse_num(source, start, charset):
    """Returns a first index>=start of chat not in charset"""
    while start < len(source) and source[start] in charset:
        start += 1
    return start
def parse_num ( source , start , charset ) : while start < len ( source ) and source [ start ] in charset : start += 1 return start
Returns a first index>=start of chat not in charset
Returns a first index > = start of chat not in charset