python - PythonでIPv4範囲(開始と終了)をスラッシュ表記に変換しますか?

Question

開始 IP アドレスと終了 IP アドレスをスラッシュ表記に変換するスクリプトはありますか?

例：

>>> ip_long = '10.182.71.0-10.182.75.255'
>>> convert_to_slash(ip_long)
10.182.71.0/24, 10.182.72.0/22

Answer 1

Google の ipaddr-py ライブラリには、summary_address_range(first, last) というメソッドがあります。

summarize_address_range(first, last):
"""Summarize a network range given the first and last IP addresses.

Example:
    >>> summarize_address_range(IPv4Address('1.1.1.0'),
        IPv4Address('1.1.1.130'))
    [IPv4Network('1.1.1.0/25'), IPv4Network('1.1.1.128/31'),
    IPv4Network('1.1.1.130/32')]

Args:
    first: the first IPv4Address or IPv6Address in the range.
    last: the last IPv4Address or IPv6Address in the range.

Returns:
    The address range collapsed to a list of IPv4Network's or
    IPv6Network's.

Raise:
    TypeError:
        If the first and last objects are not IP addresses.
        If the first and last objects are not the same version.
    ValueError:
        If the last object is not greater than the first.
        If the version is not 4 or 6.
"""