Regarding replace

[sashi2keng]

Hi,

I have a string like this:
str = "ppp= ['wwww', 'ttttt']\n"

Now in this, I want to remove 'ttttt'. After removing it should be like this:
"ppp= ['wwww']\n"

How can I acheive this? I am not able to achieve this using string replace.
Appreciate the help.

Thanks,
Sashi.

[Glenton]

Are there always 2 items in the "list"?

It might be easiest to get rid of the /n and then use an eval to create the list. Then delete it from the list. Then recreate the string from the list.

[Motoma]

Following on the heals of Glenton's questions: what is the determining factor for removing 'ttttt'? Are you looking to remove the nth element of the string or an exact substring?

[bvdet]

Sometimes re comes in handy. The following will match and replace the last part of the string.

>>> import re
>>> s1 = "ppp= ['wwww', 'ttttt']\n"
>>> patt = re.compile(r", *'[a-zA-Z0-9]+?'\]\n")
>>> patt.sub("]\n", s1)
"ppp= ['wwww']\n"
>>> s2 = "zzz =  ['rrrr', 'tttt', 'x1Tfio']\n"
>>> patt.sub("]\n", s2)
"zzz =  ['rrrr', 'tttt']\n"
>>>