常用的引數應用例項

from flask import Flask, render_template, url_for, session, request, redirect

app = Flask(__name__, template_folder="templates111", static_folder="jingtaimulu", static_url_path='/static')  # √
app.secret_key = "wang"


def confirm(func):
    def inner(*args, **kwargs):
        
 
if session.get('auth'):
            return func(*args, **kwargs)
        else:
            next_url = request.path[1:]
            return redirect(url_for("login") + f"?next={next_url}")

    return inner


@app.route('/', endpoint="index")
@confirm
def index():
    return "index"


@app.route(
 
'/login', methods=["GET", "POST"])
def login():
    msg = ""
    if request.method == "POST":
        auth = request.form.get("auth")
        if auth:
            session["auth"] = auth
            next_url = request.args.get("next", "index")
            return redirect(url_for(next_url))
        
 
else:
            msg = "error"
    return render_template("login.html", msg=msg)


@app.route('/shopping/', endpoint="shopping")
def shopping():
    return "Shopping"


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

引數解析

class Flask(_PackageBoundObject)　　

　　def __init__(
            self,
            import_name,
            static_url_path=None,   # 靜態檔案的訪問路徑, 就相當於別名, 類似於django中的 {% load static %}, 資源的url開頭就是這裡指定的路徑
            static_folder='static',     # 靜態檔案目錄的路徑 預設當前專案中的static目錄
            static_host=None,   # 遠端靜態檔案所用的Host地址, 如CDN的主機地址
            host_matching=False,    # 是否開啟host主機位匹配,是要與static_host一起使用,如果配置了static_host, 則必須賦值為True
            subdomain_matching=False,   # 理論上來說是用來限制SERVER_NAME子域名的,但是目前還沒有感覺出來區別在哪裡
            template_folder='templates',    # template模板目錄, 預設當前專案中的 templates 目錄
            instance_path=None,     # 指向另一個Flask例項的路徑
            instance_relative_config=False,     # 是否載入另一個例項的配置
            root_path=None      # 主模組所在的目錄的絕對路徑,預設專案目錄