如何将 shell 命令传递到 Python 脚本中

Question

Hello I would like to pass a shell command in the linux terminal to variable into Python script:

Here is the command in linux:

echo "azerty"

My python script would be a very simple script that print the result. The name of the script is test.py

In my terminal I would use:

echo "azerty" | ./test.py

and It would return:

azerty

Maybe you can hel. Thanks

Answer 1

When you perform some_command | other_command some_command | other_command in any POSIX shell, what it actually does is that it redirects the standard output (called stdout) of some_command to the standard input (called stdin) of other_command . In python you can access the standard input using the sys module.

From the official python documentation about sys.stdin :

These streams are regular text files like those returned by the open() function.

Reading the standard input in python is as simple as that:

import sys
content = sys.stdin.read()
print(content)