Python 在字符串中的字符之间添加空格。最有效的方式
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时间：2020-08-19 10:14:40 来源:igfitidea点击:
Python adding space between characters in string. Most efficient way
提问by user2425814
Say I have a string s = 'BINGO'; I want to iterate over the string to produce 'B I N G O'.
假设我有一个字符串s = 'BINGO'；我想遍历字符串以产生'B I N G O'.
This is what I did:
这就是我所做的：
result = ''
for ch in s:
result = result + ch + ' '
print(result[:-1]) # to rid of space after O
Is there a more efficient way to go about this?
有没有更有效的方法来解决这个问题？
回答by Kevin London
s = "BINGO"
print(" ".join(s))
Should do it.
应该做。
回答by John La Rooy
s = "BINGO"
print(s.replace("", " ")[1: -1])
Timings below
下面的时间
$ python -m timeit -s's = "BINGO"' 's.replace(""," ")[1:-1]'
1000000 loops, best of 3: 0.584 usec per loop
$ python -m timeit -s's = "BINGO"' '" ".join(s)'
100000 loops, best of 3: 1.54 usec per loop
