python - 如何连接列表来获取IP地址和端口？

Question

我编写 python 代码，并得到一个如下列表:

['221.180.147.30', '86', '61.155.169.11', '808']

我怎样才能把它变成:

['221.180.147.30:86', '61.155.169.11:808']

Answer 1

使用列表理解:

>>> lst = ['221.180.147.30', '86', '61.155.169.11', '808']
>>> [':'.join(lst[i:i+2]) for i in range(0, len(lst), 2)]
['221.180.147.30:86', '61.155.169.11:808']

使用zip(*[iter(lst)*N] itertools recipe - grouper 中介绍的技巧(这适用于任何可迭代对象，而不仅仅是列表):

>>> [':'.join(group) for group in zip(*[iter(lst)]*2)]
['221.180.147.30:86', '61.155.169.11:808']

更新

使用 map :

>>> map(':'.join, zip(lst[::2], lst[1::2]))  # In Python 2.x
['221.180.147.30:86', '61.155.169.11:808']
>>> list(map(':'.join, zip(lst[::2], lst[1::2])))  # In Python 3.x
['221.180.147.30:86', '61.155.169.11:808']

zip(lst[::2], lst[1::2])来自 Burhan Khalid 的回答。