How can I remove a specific number from a string?

Question

here is the code:

aList = ['0.01', 'xyz', 'J0.01', 'abc', 'xyz']; aList.remove('0.01'); print("List : ", aList)

here is the output: List :

['xyz', 'J0.01', 'abc', 'xyz']

How can I remove the 0.01 attached to 'J0.01'? I would like to keep the J. Thanks for your time! =)

You're using the list method remove. You want a string method instead — rafaelc
– rafaelc, Commented Jul 31, 2018 at 22:06

rafaelc · Accepted Answer · 2018-07-31 22:07:40Z

3

Seems like you want

aList = ['0.01', 'xyz', 'J0.01', 'abc', 'xyz']; >>> [z.replace('0.01', '') for z in aList] ['', 'xyz', 'J', 'abc', 'xyz']

If you want to remove also empty strings/whitespaces,

>>> [z.replace('0.01', '') for z in aList if z.replace('0.01', '').strip()] ['xyz', 'J', 'abc', 'xyz']

answered Jul 31, 2018 at 22:07

rafaelc

59.4k15 gold badges64 silver badges87 bronze badges

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

4 Comments

Jake West Over a year ago

You're amazing! Thanks a lot! =)

SuperStew Over a year ago

I assumed, incorrectly apparently, that he was looking for a generic solution to removing any number from any string.

rafaelc Over a year ago

@SuperStew Oh I see. It was kind of hard to understand I agree :) Jake Glad I could help

Jake West Over a year ago

@SuperStew... I am trying to remove 0.01 attached to every name in a list. I should have been more clear. My apologies for any misunderstandings.

Andrej Kesely · Accepted Answer · 2018-07-31 22:30:35Z

Using re module:

import re aList = ['0.01', 'xyz', 'J0.01', 'abc', 'xyz']; print([i for i in (re.sub(r'\d+\.?\d*$', '', i) for i in aList) if i])

Prints:

['xyz', 'J', 'abc', 'xyz']

EDIT:

The regexp substitution re.sub(r'\d+\.?\d*$', '', i) will substitute every digit followed by dot (optional) and followed by any number of digits for empty string. The $ signifies that the digit should be at the end of the string.

So. e.g. the following matches are valid: "0.01", "0.", "0". Explanation on external site here.

Can you please add some explanation to the complicated expression in your print command in the interest of those who are new to re which includes me

fabianmedina09 · Accepted Answer · 2018-07-31 22:22:01Z

0

Something like that can works:

l = ['0.01', 'xyz', 'J0.01', 'abc', 'xyz'] string = '0.01' result = [] for x in l : if string in x: substring = x.replace(string,'') if substring != "": result.append(substring) else: result.append(x) print(result)

try it, regards.

answered Jul 31, 2018 at 22:22

fabianmedina09

1

1 Comment

Jake West Over a year ago

… I have a list of names with 0.01 attached to each of them. For example: Obama, Barak0.01; Trump, Don0.01; etc. When I tried using the code you suggested it only printed the last name in the list (i.e. Trump, Don). Any idea how I could use this code to remove the 0.01 from everyone in the list? This code worked as you stated. I am just new and could use some pointers. Thanks for you time! =)

Collectives™ on Stack Overflow

How can I remove a specific number from a string?

3 Answers 3

4 Comments

3 Comments

1 Comment

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

4 Comments

3 Comments

1 Comment

Related