http.py 文件源码

def base36_to_int(s):
    """
    Converts a base 36 string to an ``int``. Raises ``ValueError` if the
    input won't fit into an int.
    """
    # To prevent overconsumption of server resources, reject any
    # base36 string that is long than 13 base36 digits (13 digits
    # is sufficient to base36-encode any 64-bit integer)
    if len(s) > 13:
        raise ValueError("Base36 input too large")
    value = int(s, 36)
    # ... then do a final check that the value will fit into an int to avoid
    # returning a long (#15067). The long type was removed in Python 3.
    if six.PY2 and value > sys.maxint:
        raise ValueError("Base36 input too large")
    return value