whoami in python

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What is the best way to find out the user that a python process is running under?

I could do this:

name = os.popen('whoami').read() 

But that has to start a whole new process.

os.environ["USER"]

works sometimes, but sometimes that environment variable isn't set.

2 Answers
import getpass
print(getpass.getuser())

See the documentation of the getpass module.

getpass.getuser()

Return the “login name” of the user. Availability: Unix, Windows.

This function checks the environment variables LOGNAME, USER, LNAME and USERNAME, in order, and returns the value of the first one which is set to a non-empty string. If none are set, the login name from the password database is returned on systems which support the pwd module, otherwise, an exception is raised.

This should work under Unix.

import os
print(os.getuid()) # numeric uid
import pwd
print(pwd.getpwuid(os.getuid())) # full /etc/passwd info
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