Python implements file batch name change function complete example code

I have recorded a set of courses, because sometimes some subsections need to be inserted in the middle, I hope to automatically batch modify the file name.

for example

#Project creation.mp402.Variables and types.mp4
03.More data types.mp4
[email protected]
04.Arithmetic operators.mp4
05.Relational operators.mp4

Will become

#Project creation.mp402.Variables and types.mp4
03.More data types.mp4
.mp4
05.Arithmetic operators.mp4
06.Relational operators.mp4

There is one thing to note below: the number of files exceeds 100, and zfill(2) should be changed to zfill(3)

import os

folder_path = 'e:/xxx course recording 20250402back'
txt_files = [f for f in (folder_path) if ('.mp4')]
txt_files.sort()  # Sort by file name
# Countercount = 1

for filename in txt_files:
    print(filename)
    arr = ('.')
    newfilename = '.'.join(arr[1:])
    # print(newfilename)
    # Construct a new file name    new_name = f"{str(count).zfill(2)}.{newfilename}"
    print(new_name)

    #
    # # The complete path of the original file    old_path = (folder_path, filename)
    # # The complete path to the new file    new_path = (folder_path, new_name)
    #
    # # Rename the file    (old_path, new_path)
    print(f"Rename: {filename} -&gt; {new_name}")
    #
    count += 1

Summarize

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