How to edit lines of all text files in a directory with python -

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i edit , replace lines of .txt files in directory python purpose using following code:

path = '.../dbfiles' filename in os.listdir(path): in os.listdir(path):     if i.endswith(".txt"):          open(i, 'r') f_in:             line in f_in:                line=tweet_to_words(line).encode('utf-8')                  open(i, 'w').write(line)

where tweet_to_words(line) predefined function edition lines of text file. although not sure if logic of code right!? facing following error:

ioerror: [errno 2] no such file or directory: 'thirdweek.txt'

but 'thirdweek.txt' exist in directory! question see if method using editing lines in file right or not!? , if how can fix error ?

you should add base path when use open:

        open(path + '/' + i, 'r') f_in:

the same goes for:

               open(path + '/' + i, 'w').write(line)

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