ipaddress.py 文件源码

def isinstance(val, types):
    if types is int:
        types = (int, long)
    elif type(types) is tuple and int in types:
        types += (long,)
    return _builtin_isinstance(val, types)

# functools.lru_cache is Python 3.2+ only.
# /@functools.lru_cache()/d

# int().to_bytes is Python 3.2+ only.
# s/\(\w+\)\.to_bytes(/_int_to_bytes(\1, /