Replace text with regexp

Question

I have to replace text this way:

Some data la-la-la [image=test.png] next data...
Some data la-la-la 123 [image=test2.png]

And replace that with:

Some data la-la-la test.png next data...
Some data la-la-la 123 test2.png

I tried with re.sub method from python:

for foo in re.search('(\[image=(.*)\])', text):
   text = re.sub("(?<=\[image=)*(?=\])", foo, text)

But that won't work, why?

-1: Do it for me question disguised with random nonsense attempts without any effort of reading at least the minimal part of the API — nosklo
– nosklo, Commented Dec 14, 2010 at 14:25

nosklo · Accepted Answer · 2010-12-14 14:20:24Z

4

Seriously, did you read regex documentation or at least the howto?

.search() returns a match object. You can't iterate over it.
.sub() replaces all occurrences in the string at once. You can't replace one by one.

One idea:

import re

text = """Some data la-la-la [image=test.png] next data...
Some data la-la-la 123 [image=test2.png]"""

text = re.sub(r'\[image\=([^\]]+)\]', r'\1', text)

print text

the results:

Some data la-la-la test.png next data...
Some data la-la-la 123 test2.png

answered Dec 14, 2010 at 14:20

nosklo

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4 Comments

Katriel Over a year ago

@Ock: this is about how to use Python, not regex.

Max Frai Over a year ago

Probably, yeah. I just rework some project, not mine. I haven't time to learn Python deeply. Please, help me.

Keng Over a year ago

Seriously, did you read the SO faq? Did you really say RTFM?...On SO?!!...Really?!?!?!?!

Keng Over a year ago

@Ockonal Don't try to win over the haters; you're not the jack-ass whisperer.

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