CODEWITHSUNDEEP
pythonpython-3.x
user2553807
user2553807

Reputation: 329

Python reverse iteration to split a word

I need to split my words from my punctuation- I'm thinking about having the function look at each word and determining if there is a punctuation mark in it by starting at [-1], index of -1, and then splitting the word from the punctuation as soon as it hits a letter and not a punctuation mark... 

sent=['I', 'went', 'to', 'the', 'best', 'movie!','Do','you', 'want', 'to', 'see', 'it', 'again!?!']
import string
def revF(List):
    for word in List:
        for ch in word[::-1]:
            if ch is string.punctuation:
                 #go to next character and check if it's punctuation
                newList= #then split the word between the last letter and first puctuation mark
    return newList

Upvotes: 1

Views: 158

Answers (3)

Lennart Regebro
Lennart Regebro

Reputation: 172249

Use a regexp containing the punctuation you want to split on:

re.split('re.split(r"[!?.]", text)

Demonstration:

>>> import re
>>> re.split(r"[!?.]", 'bra det. där du! som du gjorde?')
['bra det', ' d\xc3\xa4r du', ' som du gjorde', '']

Upvotes: 0

user2286078
user2286078

Reputation:

From your example, I gather that you want to split your string on a space. You can do this quite simply like this:

my_str = "I went to the best movie! Do you want to see it again!?!"
sent   = my_str.split(' ')

Upvotes: 0

Srikar Appalaraju
Srikar Appalaraju

Reputation: 73618

If all you want is to remove punctuation from a string. Python provides much better ways of doing this -

>>> import string
>>> line
'I went to the best movie! Do you want to see it again!?!'
>>> line.translate(None, string.punctuation)
'I went to the best movie Do you want to see it again'

Upvotes: 1

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