CODEWITHSUNDEEP
pythonfiletextsubstring
Abhiraam Eranti
Abhiraam Eranti

Reputation: 381

How to find all the substrings in a .txt file in Python

Okay, so I have this text file:

         hello there hello print hello there print lolol

this is what I want to do in Python(down below in pseudo-code):

         when print statement found:
              print next five letters(not including space);

This is the result I want:

         >>>[hello, lolol]

How do I solve this problem in python?

Upvotes: 0

Views: 299

Answers (2)

blhsing
blhsing

Reputation: 106455

If there are always 5 letters that follow a print and a space, you can use the following regex with lookbehind:

import re
print(re.findall(r'(?<=\bprint ).{5}', 'hello there hello print hello there print lolol'))

This outputs:

['hello', 'lolol']

Upvotes: 1

aydow
aydow

Reputation: 3801

split by 'print ' and use list indexing to get the first 5 characters of the string

In [253]: [res[:5] for res in s.split('print ')[1:]]
Out[253]: ['hello', 'lolol']

Upvotes: 1

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