Amazing-Python-Scripts

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import os
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from math import log10
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files = os.listdir(".")
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files.sort(key=lambda x: os.path.getmtime(x))
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# print(files) # list index 0 hold the oldest file
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digits = int(log10(len(files)))+1
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print(f"\nPlease verify the new file names for accuracy: press 'p' to review the file names, or 'y'/'Y' to proceed with the renaming process. Press any other key to exit the program.\n")
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n = input()
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if (n == "y" or n == "Y" or n == "p"):
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    rename, hidden = 0, 0
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    for i in range(len(files)-1):
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        oldname = files[i]
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        if (files[i][0] == "."):
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            hidden += 1
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            continue
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        if "_" in files[i] and files[i][0] != "_":
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            index = files[i].find("_")
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            isNum = files[index-1]
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            if (isNum >= "0" and isNum <= "9"):
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                tempOld = files[i][index+1:]
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            else:
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                tempOld = files[i]
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        else:
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            tempOld = files[i]
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        rename += 1
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        newfile_name = f"{str(rename).zfill(digits)}_{tempOld}"
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        if (n == "p"):
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            print(f"{tempOld} --> {newfile_name}")
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        else:
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            os.rename(oldname, newfile_name)
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    print(
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        f"\nNumber of hidden files are {hidden}. For safety purpose, they will be kept unchanged.")
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else:
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    print("File renaming cancel.")
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    exit(0)
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if n == "y" or n == "Y":
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    print("\nFile renaming successful.")
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