How to export an environment variable from a Python script?

Asked Jul 06 '22 at 14:27

Active Jul 06 '22 at 14:29

Viewed 34 times

export FOO1=bar1
python -c "import os; os.environ['FOO2'] = 'bar2'" 
echo $FOO1 $FOO2 # prints "bar1"

How do I make the environment variable FOO2='bar2' accessible to the calling bash script?

edited Jul 06 '22 at 14:29

Daniel Walker

asked Jul 06 '22 at 14:27

Toldry

2

You can't. A child process can not alter the environment of it's parent process. This is not language dependant. – jordanm Jul 06 '22 at 14:28
2

You can't. This is the best you can do: `export FOO2=$(python -c "print('bar2')" )`. – ichramm Jul 06 '22 at 14:29
@jordanm, at least, not without some ptrace black magic =) – Daniel Walker Jul 06 '22 at 14:30
2

This may work: `source <(python -c "print ('FOO2=\"inside python\"')")` – anubhava Jul 06 '22 at 14:34
2

Create from your child process (i.e. Python program) a text containing the environment setting, and in the calling process source this file. – user1934428 Jul 06 '22 at 14:45

0 Answers0