如何添加一个单一的空间一个字符串中的蟒蛇

代码示例

加空间之前和之后的字符串蟒蛇

using re adds white-space before and after the desired characters:

import re

pat = re.compile(r"([.()!])")
print (pat.sub(" \\1 ", string))
# hello .  .  .   ( world )  !

如何将空间蟒蛇

x = 10
y = x * 0.62
z = y * 2.14

print(str(x) + " " + str(y) + " " + str(z))

类似页面

带有示例的类似页面

添加的开头和结尾的空白要一串，使它集中到一定的大蟒蛇

我怎么可以把空间，同时增加两个字符串中的蟒蛇

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