Python類ポインタ操作

In [23]: friends_ids = []

In [24]: followers_ids = []

In [25]: for ids1, ids2 in [[friends_ids, followers_ids]]:
   ....:     ids1 += '1'
   ....:     ids2 += '2'
   ....:

In [26]: id(ids1)
Out[26]: 55711504

In [27]: id(friends_ids)
Out[27]: 55711504

In [28]: ids1
Out[28]: ['1']

In [29]: friends_ids
Out[29]: ['1']

In [30]: id(ids2)
Out[30]: 55754664

In [31]: id(followers_ids)
Out[31]: 55754664

In [32]: ids2
Out[32]: ['2']

In [33]: followers_ids
Out[33]: ['2']