Flask 判断 HTTP 请求

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from flask import Flask, request
app = Flask(__name__)


@app.route("/", methods=["POST", "GET", "PUT"])    # 限定请求方式
def first():
    return f"这是 {request.method} 请求"


@app.route("/<username>")
def show(username):
    return f"你好，{username}！"


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