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<H2><A NAME="SECTION0010810000000000000000">
8.8.1 Example</A>
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<A NAME="termios_Example"></A>
<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>
<div class="verbatim"><pre>
def getpass(prompt = "Password: "):
import termios, sys
fd = sys.stdin.fileno()
old = termios.tcgetattr(fd)
new = termios.tcgetattr(fd)
new[3] = new[3] & ~termios.ECHO # lflags
try:
termios.tcsetattr(fd, termios.TCSADRAIN, new)
passwd = raw_input(prompt)
finally:
termios.tcsetattr(fd, termios.TCSADRAIN, old)
return passwd
</pre></div>
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<span class="release-info">Release 2.4.3, documentation updated on 29 March 2006.</span>
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