Renaming file extension using pathlib (python 3)

You have to actually rename the file not just print out the new name.

1. Use Path.rename()

    from pathlib import Path
    my_file = Path("E:\\seaborn_plot\\x.dwt")
    my_file.rename(my_file.with_suffix('.txt'))
   

Note: To replace the target if it exists use Path.replace()

2. Use os.rename()

    import os
    my_file="E:\\seaborn_plot\\x.dwt"
    new_ext=".txt"
    # Gets my_file minus the extension
    name_without_ext = os.path.splitext(my_file)[0]
    os.rename(my_file, name_without_ext + new_ext)
   

Ref:

1. os.path.splitext(path)
2. PurePath.with_suffix(suffix)