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#!/usr/bin/env python
"""
get_password function that displays asterisks instead of the actual characters.
With the addition of a ControlT shortcut to hide/show the input.
"""
from __future__ import unicode_literals
from prompt_toolkit import prompt
from prompt_toolkit.key_binding import KeyBindings
from prompt_toolkit.filters import Condition
def main():
hidden = [True] # Nonlocal
bindings = KeyBindings()
@bindings.add('c-t')
def _(event):
' When ControlT has been pressed, toggle visibility. '
hidden[0] = not hidden[0]
print('Type Control-T to toggle password visible.')
password = prompt('Password: ',
is_password=Condition(lambda: hidden[0]),
key_bindings=bindings)
print('You said: %s' % password)
if __name__ == '__main__':
main()
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