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#!/usr/bin/env python
"""
Example of implementing auto correction while typing.
The word "impotr" will be corrected when the user types a space afterwards.
"""
from prompt_toolkit import prompt
from prompt_toolkit.key_binding import KeyBindings
# Database of words to be replaced by typing.
corrections = {
"impotr": "import",
"wolrd": "world",
}
def main():
# We start with a `KeyBindings` for our extra key bindings.
bindings = KeyBindings()
# We add a custom key binding to space.
@bindings.add(" ")
def _(event):
"""
When space is pressed, we check the word before the cursor, and
autocorrect that.
"""
b = event.app.current_buffer
w = b.document.get_word_before_cursor()
if w is not None:
if w in corrections:
b.delete_before_cursor(count=len(w))
b.insert_text(corrections[w])
b.insert_text(" ")
# Read input.
text = prompt("Say something: ", key_bindings=bindings)
print("You said: %s" % text)
if __name__ == "__main__":
main()
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