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How to Use prompt_toolkit Autocomplete in Python

Demonstrates an interactive command-line prompt with autocomplete using prompt_toolkit's WordCompleter and a mock dataset.

cli autocomplete prompt-toolkit
Python 
from prompt_toolkit import prompt
from prompt_toolkit.completion import WordCompleter

def main():
    """Demo of prompt_toolkit autocomplete with a mock dataset."""
    # A simple mock "database" of programming languages
    languages = [
        "Python", "Java", "JavaScript", "TypeScript", "C++", "C#",
        "Go"…
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