CODEWITHSUNDEEP
pythonperl
kloop
kloop

Reputation: 4721

How to translate Perl's match and substitution operators to Python?

I am trying to translate a few directives for regular expressions from Perl to Python.

I am specifically looking for being able to translate the following three directives:

  while ($string =~ s/A/B/g) {
  }


  $string =~ s/A/B/g;

  if ($string =~ m/a/)
  {
       ## do something
  }

It seems like you can't use the usual s// and m// syntax that Perl and other unix tools have. Is it really true, and I would have to look deeply into regexp analysis in Python, or is there some easy way to translate these directives?

Upvotes: 0

Views: 202

Answers (1)

nandhp
nandhp

Reputation: 4817

Have a look at the re module. With re, you can do things like this:

import re
pattern = re.compile(r'[A-Z]')
if pattern.search(string):
    print "string contains a capital letter"

You can also do substitutions using the sub method instead of search.

Upvotes: 3

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