That's a lot of text! Please just provide a script within a code block (with Python syntax highlighting enabled).

Furthermore, I do not just want them to be named 1, 2, 3, 4 anymore but instead I want to prefix the names of the files with 01_, 02_, 03_ and so on.
Write a CLI Parser for it using argparse and add a --dry-run option. The program is allowed to overwrite files (or it can assume there will be no such conflicts). It should also check at the start whether or not the files are already appended with such numbers 01_ etc.
If any single file does not follow such naming convention, then the program is allowed to prepend the appropriate prefix to all the files (additionally if need be).
If there are more than 99 files, then the number of leading zeros should be increased appropriately.

Do you see any potential issues with this specification or have any questions? If not, then please proceed to writing the code.
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