How to clear os.environ value for only one variable in Python

Question

I install os.environ['PYTHONHOME']="/home/user/OpenPrint/py2.6" in my python script

But at the end of the script, I need to clear this variable so that I can call another python script from another place. Can someone tell me how to do this? I tried os.environ.clear() , but this also clears all other variables.

Answer 1

Using

 os.environ.pop("PYTHONHOME") 

See the (minimal) documentation at http://docs.python.org/2/library/os.html

Answer 2

try

 del os.environ["PYTHONHOME"] 

this variable removes "PYTHONHOME" from the os.environ dict.

Answer 3

 os.unsetenv('PYTHONHOME') 

This will disable the environment variable.