CODEWITHSUNDEEP
pythonpython-3.x
Sergey Luchko
Sergey Luchko

Reputation: 3356

Python find strings and replace

I have string in Python :

s = "htmlhtl {% static path1 %} htmlhtml {% static path2/path3 %} htmlhtml "

and variable :

path = "www.static.com"

I want to make from s new string which will contain on the places of the {% static ... %} tag paths to folders:

"htmlhtl www.static.com/path1 htmlhtml www.static.com/path2/path3 htmlhtml"

I have opened python doc, and have tried to do it by myself but I can't even match tags. The task seems to be very often case for regexp.

Upvotes: 1

Views: 65

Answers (2)

TobalJackson
TobalJackson

Reputation: 139

Here is an example solution I came up with to your provided information using regular expressions:

>>> import re
>>> s = "htmlhtl {% static path1 %} htmlhtml {% static path2/path3 %} htmlhtml "
>>> path = "www.static.com"
>>> pat = re.compile(r'\{%\s*static\s+([\w/]+)\s*%\}')
>>> re.sub(pat, path+r'/\1',s)
'htmlhtl www.static.com/path1 htmlhtml www.static.com/path2/path3 htmlhtml '

Upvotes: 0

Jan
Jan

Reputation: 43169

You can either use Django's builtin methods or a simple regex to achieve the same:

import re

s = "htmlhtl {% static path1 %} htmlhtml {% static path2/path3 %} htmlhtml " 

rx = re.compile(r'{% static (?P<path>\S+) %}')
# search for {% static ...%}

s = rx.sub(r'www.static.com/\g<path>', s)
print(s)
# htmlhtl www.static.com/path1 htmlhtml www.static.com/path2/path3 htmlhtml

See a working demo on ideone.com.

Upvotes: 1

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