import click
from flask import Flask

app = Flask(__name__)
app.debug = True


@app.route('/')
def hello_world():
    return 'Hello World!1'


@app.cli.command()
def hello():
    click.echo('Hello')

@app.cli.command('users')
@click.argument('name')
def user(name):
    """这是一个自定义的命令"""
    click.echo(name)

if __name__ == '__main__':
    app.run(debug=True)

显示效果

Commands:
  hello
  routes  Show the routes for the app.
  run     Runs a development server.
  shell   Runs a shell in the app context.
  users   这是一个自定义的命令

使用方法

PS E:\flask\pylyccms> flask users 小明
小明