removing a particular pattern from a given string in python

i would like generate the following output from the string "[cid:12d32323232dde]foo foo foo \r\n\r\n\r\n[cid:123fsr3ef234fsdfere]\r\n"

expected output

foo foo foo \r\n\r\n\r\n

>Solution :

So – remove all [cid:...] blocks and any newlines/carriage-returns trailing them?

>>> import re
>>> s = "[cid:12d32323232dde]foo foo foo \r\n\r\n\r\n[cid:123fsr3ef234fsdfere]\r\n"
>>> re.sub(r"\[cid:(.+?)\][\r\n]*", "", s)
'foo foo foo \r\n\r\n\r\n'