python - Add a text after pattern in python

Question

Is there a way to add some text after pattern in python string?

For example I can do it easily with sed:

sed 's/my [a-z]\+ pattern/& lost_text/'

where & means the whole matched pattern.

search and man pages didn't help me :(

Answer 1

您正在寻找re.sub：

例子：

>>> import re
>>> re.sub(r'(\d+)',r'\1--','abcd1cf123vf')
'abcd1--cf123--vf'