CODEWITHSUNDEEP
pythonregex
Madawar
Madawar

Reputation: 507

Stripping @ tags from a string in python

I am trying to use regex to remove @tags from a string in python however when i try to do this

str = ' you @warui  and @madawar '
h = re.search('@\w*',str,re.M|re.I)
print h.group()

It outputs only the first @tag. 

@warui

and when i try it on http://regexr.com?304a6 it works

Upvotes: 1

Views: 192

Answers (3)

andrewmu
andrewmu

Reputation: 14534

re.search() will only match one occurrence of the pattern. If you want to find more, try using re.findall().

Upvotes: 3

Peter de Rivaz
Peter de Rivaz

Reputation: 33509

import re
s = ' you @warui  and @madawar '
for h in re.findall('@\w*',s,re.M|re.I):
  print h

Prints:

@warui

@madawar

Upvotes: 3

eumiro
eumiro

Reputation: 212885

"to use regex to remove @tags from a string"

import re

text = ' you @warui  and @madawar '
stripped_text = re.sub(r'@\w+', '', text)
# stripped_text == ' you   and  '

or do you want to extract them?

import re

text = ' you @warui  and @madawar '
tags = re.findall(r'@\w+', text)
# tags == ['@warui', '@madawar']

A @tag is defined as @ followed by at least one alphanumeric character, that's why @\w+ is better than @\w*. Also you don't need to modify the case-sensitiveness, because \w matches both lower and upper characters.

Upvotes: 5

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