Replace multiple elements in a string

Question

I am learning the intermediate python.

Suppose there's a string

astring = '[Embodied cognition - Wikipedia](https://en.wikipedia.org/wiki/Embodied_cognition)'

Work with string.punctuation to extract the words

from string import punctuation
for delimiter in punctuation:
    if delimiter in astring:
        astring = astring.replace(delimiter, ' ')

In [7]: astring
Out[7]: ' Embodied cognition   Wikipedia  https   en wikipedia org wiki Embodied cognition '

I tried with map and it works

In [12]: a = map(astring.replace, punctuation, ' ')
In [14]: list(a)
Out[14]: [' Embodied cognition   Wikipedia  https   en wikipedia org wiki Embodied cognition ']

How can the problem be solved in other advanced techniques?

What version of Python are you using? map should be padding your string ' ' argument with None, if I'm reading the docs correctly. — Silvio Mayolo
– Silvio Mayolo, Commented Nov 28, 2017 at 3:13
sorry, I complement python3.6 tag immediately. @SilvioMayolo — Wizard
– Wizard, Commented Nov 28, 2017 at 3:16

James · Accepted Answer · 2017-11-28 03:10:19Z

4

You should look into regular expressions (regex for short).

import re

astring = '[Embodied cognition - Wikipedia](https://en.wikipedia.org/wiki/Embodied_cognition)'
re.sub(r'[^A-Za-z0-9]+', ' ', astring)
# returns:
' Embodied cognition Wikipedia https en wikipedia org wiki Embodied cognition '

answered Nov 28, 2017 at 3:10

James

37k4 gold badges54 silver badges79 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Wizard Over a year ago

Thank you. I learned regex last Saturday. It dramatically improve efficiency to process text.

Collectives™ on Stack Overflow

Replace multiple elements in a string

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related