How to run complex shell command in Python?

Question

How can I run the below command in Python 3.8 and get the output?

Command:

git remote show [URL for remote Github repo] | sed -n '/HEAD branch/s/.*: //p'

Command purpose:

To get the default branch from remote Github repo also trying to run this outside git directory

Below are the commands I have tried till now, but it gives error: "fatal: not a git repository (or any of the parent directories): .git":

import os
p = os.system("git remote show https://github.com/docker/compose | grep 'HEAD branch' | cut -d' ' -f5")

import subprocess

subprocess.run(["git", "remote", "show", "https://github.com/docker/compose", "|", "grep", "'HEAD branch'", "|", "cut", "-d' '", "-f5" ])

I need the command to execute even outside the Git directory, please help me

Brinfer · Accepted Answer · 2022-04-27 07:28:35Z

2

To run a command you can use subprocess.run which can return all the information you want.

But if you just want information from git use a ready-made module like GitPython instead

answered Apr 27, 2022 at 7:28

Brinfer

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4 Comments

Ranjith N Over a year ago

subprocess.run did not work, if you know the exact command to execute please share

Brinfer Over a year ago

What is the error ?

Ranjith N Over a year ago

error: fatal: not a git repository (or any of the parent directories): .git I fixed it using git init but it will create .git directory which i don't want is there any way to execute this without creating a .git directory?

Brinfer Over a year ago

Did you try to execute the command in the terminal? At the same level / folder where you run the Python program? And no, most Git commands require a local repository, including the one in the question

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