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ortiga
Asked: 2020-09-02 13:01:48 +0800 CST 2020-09-02 13:01:48 +0800 CST

Remove elements from an array in a file in python

  • 772

I have the following array:

array = ['[email protected]','[email protected]','[email protected]']

and then I have a text file with the following:

[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]

How could I remove the elements in the text file from my array, that is, so that the file remains as follows:

[email protected]
[email protected]
[email protected]
python

1 Answers

  1. Best Answer

    A simple way would be to process your input file line by line and check for each line if that data is in your array, and if it is not , write it to another output file.

    So:

    with open("entrada.txt", "r") as f_in, open("salida.txt", "w") as f_out:
   for linea in f_in:
       if linea.strip() not in array:
           f_out.write(linea)

    What linea.strip()it does is to eliminate any spaces that may have in the file in front or behind, as well as the carriage return, before comparing it with the elements of the array.

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