如何在Python中重复字符串中的单个字符

问题描述

我知道

"123abc" * 2

评估为 "123abc123abc"，但是有没有一种简单的方法可以将单个字母重复 N 次，例如将 "123abc" 转换为 "112233aabbcc" 或 "111222333aaabbbccc"?

解决方案

关于:

>>>s = '123abc'>>>n = 3>>>''.join([char*n for char in s])'111222333aaabbbccc'>>>

(从生成器表达式更改为列表合成，因为在连接内使用列表合成是更快)

I know that

"123abc" * 2

evaluates as "123abc123abc", but is there an easy way to repeat individual letters N times, e.g. convert "123abc" to "112233aabbcc" or "111222333aaabbbccc"?

解决方案

What about:

>>> s = '123abc'
>>> n = 3
>>> ''.join([char*n for char in s])
'111222333aaabbbccc'
>>> 

(changed to a list comp from a generator expression as using a list comp inside join is faster)

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