\section{\module{getpass}         --- Portable password input} \declaremodule{standard}{getpass}\modulesynopsis{Portable reading of passwords and retrieval of the userid.}\moduleauthor{Piers Lauder}{piers@cs.su.oz.au}% Windows (& Mac?) support by Guido van Rossum.\sectionauthor{Fred L. Drake, Jr.}{fdrake@acm.org}  The \module{getpass} module provides two functions:  \begin{funcdesc}{getpass}{\optional{prompt\optional{, stream}}}  Prompt the user for a password without echoing.  The user is  prompted using the string \var{prompt}, which defaults to  \code{'Password: '}. On \UNIX, the prompt is written to the  file-like object \var{stream}, which defaults to  \code{sys.stdout} (this argument is ignored on Windows).   Availability: Macintosh, \UNIX, Windows.  \versionchanged[The \var{stream} parameter was added]{2.5}\end{funcdesc}  \begin{funcdesc}{getuser}{}  Return the ``login name'' of the user.  Availability: \UNIX, Windows.   This function checks the environment variables \envvar{LOGNAME},  \envvar{USER}, \envvar{LNAME} and \envvar{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 \refmodule{pwd} module,  otherwise, an exception is raised.\end{funcdesc}