Python全栈：flask的blueprint蓝图使用

from flask import Flask
app = Flask(__name__)
@app.route('/')
def hello_world():
    return 'Hello World!'
if __name__ == '__main__':
    app.run()

# api/main.py
from flask import Blueprint
app_api = Blueprint(name="app_api", import_name=__name__)
@app_api.route("/")
def show():
    return "<h1>hello world app_api<h1>"

# run.py
from flask import Flask
# 引入蓝图文件
from demo.api.main import app_api
app = Flask(__name__)
@app.route('/')
def hello_world():
    return '<h1>Hello World! index<h1>'
# 注册蓝图
app.register_blueprint(blueprint=app_api, url_prefix='/api')
if __name__ == '__main__':
    app.run(host="127.0.0.1", port=5002)

app_api = Blueprint(name="app_api", import_name=__name__,
                    static_folder='static',  # 静态文件
                    template_folder='templates'  # 模板文件夹
        )

@app.route('/hello')
def hello():
    return redirect(url_for("app_api.hello_world"))

@app.errorhandler(404)
def page_not_found(e):
    return "<h1>404<h1>"