How do I remove integers from the string imported from a file?

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Python

def fileinput():
    with open('constant.txt') as f:
        lines = f.readlines()
        print(lines)

    print('Initial string: ', lines)
    res = ''.join([i for i in lines if not i.isdigit()])
    print('Final string: ', res)


fileinput()

What I have tried:

['Geeks123for127Geeks']
Initial string:  ['Geeks123for127Geeks']
Final string:  Geeks123for127Geeks

This is the output that I am getting. The problem is for 'Final string:' I need it to display the string without the integers. How would I fix this?

Posted 22-Nov-22 22:03pm

DosNecro

Updated 22-Nov-22 22:23pm

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Richard Deeming · Answer 1 · 2022-11-22T22:23:00

Your code is iterating over the lines of the file, and testing whether the entire line is a digit. You need to remove the digits from each line instead.

Try something like this:

Python

def removeDigits(str):
    return str.translate({ord(i): None for i in '0123456789'})

def fileinput():
    with open('constant.txt') as f:
        lines = f.readlines()
        print(lines)
    
    print('Initial string: ', lines)
    res = list(map(removeDigits, lines))
    print('Final string: ', res)

fileinput()