16.9. getpass — Portable password input

Source code: Lib/getpass.py


The getpass module provides two functions:

getpass.getpass(prompt=”Password: “, stream=None)

Prompt the user for a password without echoing. The user is prompted using the string prompt, which defaults to 'Password: '. On Unix, the prompt is written to the file-like object stream using the replace error handler if needed. stream defaults to the controlling terminal (/dev/tty) or if that is unavailable to sys.stderr (this argument is ignored on Windows).

If echo free input is unavailable getpass() falls back to printing a warning message to stream and reading from sys.stdin and issuing a GetPassWarning.

Note

If you call getpass from within IDLE, the input may be done in the terminal you launched IDLE from rather than the idle window itself.

exception getpass.GetPassWarning

A UserWarning subclass issued when password input may be echoed.

getpass.getuser()

Return the « login name » of the user.

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.