开源模块

import click
@click.command()
@click.option('--count', default=1, help='Number of greetings.')
@click.option('--name', prompt='Your name', help='The person to greet.')
def hello(count, name):
    """Simple program that greets NAME for a total of COUNT times."""
    for x in range(count):
        click.echo('Hello %s!' % name)
if __name__ == '__main__':
    hello()

❯ python click_hello.py --count=3
Your name: kyle
Hello kyle!
Hello kyle!
Hello kyle!
❯ python click_hello.py --help   
Usage: click_hello.py [OPTIONS]
  Simple program that greets NAME for a total of COUNT times.
Options:
  --count INTEGER  Number of greetings.
  --name TEXT      The person to greet.
  --help           Show this message and exit.

prompt 为 true，交互式输入密码
hide_input 为 True，可以隐藏命令行输入
confirmation_prompt 为True，密码二次验证

import click
@click.command()
@click.option('--password', prompt=True, hide_input=True, confirmation_prompt=True)
def encrypt(password):
    click.echo('Encrypting password to %s' % password.encode('rot13'))
if __name__ == '__main__':
    encrypt()

from prompt_toolkit import prompt
while True:
    user_input = prompt('>')
    print(user_input)

历史命令输入支持

from prompt_toolkit import prompt
from prompt_toolkit.history import FileHistory
while True:
    user_input = prompt('>', history=FileHistory('history.txt'))
    print(user_input)

❯ cat history.txt 
# 2021-03-11 12:06:56.871280
+dfsgsg
# 2021-03-11 12:06:58.126798
+sldbfnvljdfs
# 2021-03-11 12:06:59.568565
+avriuiue
# 2021-03-11 12:07:00.651740
+aoinsbnv

用户输入时自动提示

from prompt_toolkit import prompt
from prompt_toolkit.history import FileHistory
from prompt_toolkit.auto_suggest import AutoSuggestFromHistory
while True:
    user_input = prompt('>', history=FileHistory(
        'history.txt'), auto_suggest=AutoSuggestFromHistory())
    print(user_input)

自动补全

from prompt_toolkit import prompt
from prompt_toolkit.history import FileHistory
from prompt_toolkit.auto_suggest import AutoSuggestFromHistory
from prompt_toolkit.completion import WordCompleter
SQLCompleter = WordCompleter(
    ['select', 'from', 'insert', 'update', 'delete', 'drop'], ignore_case=True)
while True:
    user_input = prompt('>', history=FileHistory(
        'history.txt'), auto_suggest=AutoSuggestFromHistory(), completer=SQLCompleter)
    print(user_input)