CODEWITHSUNDEEP
pythonarrayselement
ono
ono

Reputation: 3102

Removing last character from each element in Python list

I have a list find_words which is 

[u'Duration$', u'Noun$', u'Adjective$']

I would like to remove all the '$' so it looks like

[u'Duration', u'Noun', u'Adjective']

How do I go about this? Also, how do I re-add the '$' as well.

Upvotes: 2

Views: 5614

Answers (4)

koblas
koblas

Reputation: 27048

List comprehension is your friend.

You have a choice to remove just the last character word[:-1] or a $ if it's present word.rstrip('$'). This is going to be application defined

 words = [u'Duration$', u'Noun$', u'Adjective$']
 result = [word[:-1] for word in words]

Also to re-add it:

 added_back = [word + '$' for word in result]

Upvotes: 3

sureshvv
sureshvv

Reputation: 4412

words = [ x[:-1] for x in words ]

will remove last character from each item

Upvotes: 3

Gareth Latty
Gareth Latty

Reputation: 88977

You can do this simply with a list comprehension and str.rstrip():

[word.rstrip("$") for word in words]

Or to add them:

[word+"$" for word in words]

E.g:

>>> words = ['Duration$', 'Noun$', 'Adjective$']
>>> words = [word.rstrip("$") for word in words]
>>> words
['Duration', 'Noun', 'Adjective']
>>> [word+"$" for word in words]
['Duration$', 'Noun$', 'Adjective$']

Upvotes: 6

Waleed Khan
Waleed Khan

Reputation: 11467

To remove the last character, regardless of what it is:

find_words = [i[:-1] for i in find_words]

But you should be using rstrip if it's guaranteed to be a $:

find_words = [i.rstrip("$") for i in words]

To add a $:

find_words = [i + "$" for i in find_words]

Upvotes: 1

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