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<H2><A NAME="SECTION0010710000000000000000">
8.7.1 Example</A>
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<P>
Here's a function that prompts for a password with echoing turned
off.  Note the technique using a separate <tt class=function>tcgetattr()</tt> call
and a <tt class=keyword>try</tt> ... <tt class=keyword>finally</tt> statement to ensure that the
old tty attributes are restored exactly no matter what happens:

<P>
<dl><dd><pre class=verbatim>
def getpass(prompt = "Password: "):
    import termios, TERMIOS, sys
    fd = sys.stdin.fileno()
    old = termios.tcgetattr(fd)
    new = termios.tcgetattr(fd)
    new[3] = new[3] &amp; ~TERMIOS.ECHO          # lflags
    try:
        termios.tcsetattr(fd, TERMIOS.TCSADRAIN, new)
        passwd = raw_input(prompt)
    finally:
        termios.tcsetattr(fd, TERMIOS.TCSADRAIN, old)
    return passwd
</pre></dl>

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