CODEWITHSUNDEEP
pythonstringlistappendoutput
juiceb0xxie
juiceb0xxie

Reputation: 59

Python: why is string not appending to every element in the list?

files = "a.txtb.txt"

if files.find( ".txt" ) != -1:
    files = files.split( ".txt" )
    files.remove( "" )
    [ file + ".txt" for file in files ]
    print( files )

I'm new to python. The output I want is the list files = [a.txt, b.txt] in the end, but for testing reasons I have to do all that stuff in the front first. I don't understand why the string cannot be appended to all the elements in my list.

Upvotes: 0

Views: 284

Answers (3)

Fernando Karpinski
Fernando Karpinski

Reputation: 268

You could do the following to obtain the desired result:

files = "a.txt, b.txt"
results = files.split( ',' )

After this, results will contain the desired result in the form of a list.

Upvotes: -1

Malik Brahimi
Malik Brahimi

Reputation: 16711

Use a non-greedy regular expression to find the contained text files:

files = re.findall(r'\w+?\.txt', file_string)

Upvotes: 2

Paul Rooney
Paul Rooney

Reputation: 21609

You need to assign the list back to files. As it stands it just throws the list with the appended values away.

e.g.

files = [ file + ".txt" for file in files ]

Upvotes: 2

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