在ubuntu中双击文件时如何在文件上执行python脚本

Question

I have a python script that can open a particular kind of a file. It is an SPE file, opened using with the spe2py library ( https://pypi.org/project/spe2py/ ). I'd like, when I double click on a file of that kind, to launch the script passing to it the path of the file where I clicked. In this way my script could show the content of that file. How could I do to do that? I am using Linux, Ubuntu 18.04.

Thanks,

Answer 1

I use Linux Mint which is based on Ubuntu but it uses MATE (desktop environment) with file manager Caja (previously Nemo/Nautilus ) so last point (5) can be different on Ubuntu or other Linux .

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You need few things:

1. script has to use sys.argv to get selected filename

2. you have to add shebang in first line of script so system will know to use Python to run this script

#!/usr/bin/env python

3. you have to set it executable so system will use shebang to run it (and you don't have to use python script.py )

chmod +x script.py

4. you could put script in folder which is in PATH so system can run it in any folder without using full path to script. On PATH could be folder ~/bin for your scripts - so you can put script in this folder.

5. in file manager Nemo/Nautilus/Caja you can right click on SPE file to see menu - there should be "Open with ... > Other program" and you can set your script. You can use full path if you didn't put script in folder from PATH . If you use different file manager then you will have to search similar option

Nemo/Nautilus/Caja also sets variables with names of selected/highlighted files so you can run script with all files at once.

CAJA_SCRIPT_NEXT_PANE_SELECTED_URIS
CAJA_SCRIPT_NEXT_PANE_SELECTED_FILE_PATHS
CAJA_SCRIPT_NEXT_PANE_CURRENT_URI
CAJA_SCRIPT_SELECTED_URIS
CAJA_SCRIPT_SELECTED_FILE_PATHS
CAJA_SCRIPT_CURRENT_URI

In script they should be avaliable

import os

print( os.environ['CAJA_SCRIPT_NEXT_PANE_SELECTED_URIS'] )

or safer if variable doesn't exists

import os

print( os.environ.get('CAJA_SCRIPT_NEXT_PANE_SELECTED_URIS') )

Answer 2

I would suggest you to run your python script using bash script program.

You can make your bash script like this:

Blockquote

#!/bin/sh
python3 python_script.py

Save this text file with .sh extension