Renaming file extension using pathlib (python 3)

Question

I am using windows 10 and winpython. I have a file with a .dwt extension (it is a text file). I want to change the extension of this file to .txt.

My code does not throw any errors, but it does not change the extension.

from pathlib import Path

filename = Path("E:\seaborn_plot\x.dwt")

print(filename)

filename_replace_ext = filename.with_suffix('.txt')

print(filename_replace_ext)

Expected results are printed out (as shown below) in winpython’s ipython window output:

E:seaborn_plotx.dwt

E:seaborn_plotx.txt

But when I look for a file with a renamed extension, the extension has not been changed, only the original file exists. I suspect windows file permissions.

Asked By: user3398600

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Source

Answer 1

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

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()

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:

Answered By: Bitto Bennichan

Answer 2

From the docs:

Path.rename(target)

Rename this file or directory to the given target. On Unix, if target exists and is a file, it will be replaced silently if the user has permission. target can be either a string or another path object.

^{pathlib — Object-oriented filesystem paths on docs.python.org}

You could use it like this:

from pathlib import Path


filename = Path("E:\seaborn_plot\x.dwt")
filename_replace_ext = filename.with_suffix(".txt")
filename.rename(filename_replace_ext)

Answered By: alejandro joya cruz

Renaming file extension using pathlib (python 3)

Question:

Answers:

`Path.rename(target)`