flask中的信号量

一.在flask中自定义信号

from flask import Flask, current_app, flash, render_template
from flask.signals import _signals

app = Flask(import_name=__name__)

# 自定义信号
xxxxx = _signals.signal('xxxxx')

def func(sender, *args, **kwargs):
    print(sender)

# 自定义信号中注册函数
xxxxx.connect(func)

@app.route("/x")
def index():
    # 触发信号
    xxxxx.send('', k1='v1')
    return 'Index'

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