将字符串中的子字符串大写 [英] Capitalize a substring within a string

问题描述

我正在尝试创建类似的东西:

string:你今天过得怎么样?子串:o>>>今天怎么样?

我已经编写了其余的代码(提示输入字符串等)，我只是坚持必须将字符串中的子字符串大写.

解决方案

>>>s='你今天过得好吗?>>>sub_s='o'>>>s.replace(sub_s, sub_s.upper())'今天​​怎么样?'

如果您只想更改一些(即第二个)，一个衬里，则可能会变得更加复杂:

<预><代码>>>>''.join([item.upper() if i==[idx for idx, w in enumerate(s) if w==sub_s][1] else item for i, item in enumerate(s)])'今天​​怎么样?'

I'm trying to create something like:

string: How do you do today?
substring: o

>>> hOw dO yOu dO tOday?

I've already written the rest of the code (prompting for strings etc.), I am just stuck on having to capitalize the substring within the string.

解决方案

>>> s='How do you do today?'
>>> sub_s='o'
>>> s.replace(sub_s, sub_s.upper())
'HOw dO yOu dO tOday?'

And can get more complicated if you only want to change some (i.e., the 2nd one), one liner:

>>> ''.join([item.upper() if i==[idx for idx, w in enumerate(s) if w==sub_s][1] else item for i, item in enumerate(s)])
'How dO you do today?'

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