在Python中将相同的字符串追加到字符串列表 [英] Appending the same string to a list of strings in Python

问题描述

我正在尝试获取一个字符串，并将其附加到列表中包含的每个字符串中，然后创建一个包含已完成字符串的新列表.示例:

I am trying to take one string, and append it to every string contained in a list, and then have a new list with the completed strings. Example:

list = ['foo', 'fob', 'faz', 'funk']
string = 'bar'

*magic*

list2 = ['foobar', 'fobbar', 'fazbar', 'funkbar']

我尝试了循环，并尝试了列表理解，但这是垃圾.一如既往的任何帮助，不胜感激.

I tried for loops, and an attempt at list comprehension, but it was garbage. As always, any help, much appreciated.

推荐答案

最简单的方法是使用列表理解:

The simplest way to do this is with a list comprehension:

[s + mystring for s in mylist]

请注意，我避免使用诸如list之类的内置名称，因为这样会掩盖或隐藏内置名称，这非常不好.

Notice that I avoided using builtin names like list because that shadows or hides the builtin names, which is very much not good.

此外，如果您实际上不需要列表，而只需要一个迭代器，则生成器表达式可能会更有效(尽管在短列表中这并不重要):

Also, if you do not actually need a list, but just need an iterator, a generator expression can be more efficient (although it does not likely matter on short lists):

(s + mystring for s in mylist)

这些功能非常强大，灵活且简洁.每个优秀的python程序员都应该学会使用它们.

These are very powerful, flexible, and concise. Every good python programmer should learn to wield them.

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