How to make Python scripts run directly under Ubuntu

Let’s take the translation program as an example. Last time, I talked to you about application packaging under Windows. This time, I will tell you that Python files can be executed by themselves under Linux, so there is no need for python xxx.py.

It's very simple, just add the following sentence at the top of the Python source file!

#!/usr/bin/python3 

/usr/bin/python3 is the directory where the python3 interpreter is located under Ubuntu. You can use which python3 to view it.

Then execute chmod +x ./xxx.py to add executable permissions to the Python script

For example, here

sudo chmod +x ./translate.py

Finally run ./translate.py

Then... an error was reported

-bash: ./translate.py: /usr/bin/python3^M: interpreter error: no such file or directory

Why?

This is the source code I wrote under Win7, and then transferred it to Ubuntu using WinSCP. This caused a problem: the code written under DOS is incompatible with Linux.

Solution:

sudo vim translate.py
:set ff=unix 

Then execute ./translate.py

OK, it runs perfectly, but if you look closely, it seems not perfect, because every time you have to switch to the directory where the file is located to run it, in order to use the program more conveniently, we can connect translate.py to /usr/bin, or /usr/local/bin, etc., in the directory where the system environment variables are configured.

sudo ln -s /xxxx/xxxx/xxxx/translate.py /usr/local/bin/dict

/xxxx/xxxx/xxxx/ is the absolute path where translate.py is located

/usr/local/bin/dict, dict is the name of translate.py after soft linking

Operation effect

OK, won’t there be a ready-made translation program in my Ubuntu system from now on? Isn’t it wonderful!

The above method of implementing Python scripts to run directly under Ubuntu is all the content that the editor shares with you. I hope it can give you a reference, and I also hope that you will support 123WORDPRESS.COM.