I want to replace (number) with just number in an expression like this:
我想用这样的表达式中的number替换(number):
4 + (3) - (7)
It should be:
它应该是:
4 + 3 - 7
If the expression is:
如果表达式是:
2+(2)-(5-2/5)
it should be like this:
它应该是这样的:
2+2-(5-2/5)
I tried
a = a.replace(r'\(\d\+)', '')
where a is a string, but it did not work. Thanks!
其中a是一个字符串,但它不起作用。谢谢!
1 个解决方案
#1
7
Python has a powerful module for regular expressions, re, featuring a substitution method:
Python有一个强大的正则表达式模块,re,具有替换方法:
>>> import re
>>> a = '2+(2)-(5-2/5)'
>>> re.sub('\((\d+)\)', r'\1', a)
'2+2-(5-2/5)'
#1
7
Python has a powerful module for regular expressions, re, featuring a substitution method:
Python有一个强大的正则表达式模块,re,具有替换方法:
>>> import re
>>> a = '2+(2)-(5-2/5)'
>>> re.sub('\((\d+)\)', r'\1', a)
'2+2-(5-2/5)'