目录结构

game.html

"en">
    "UTF-8">
    
 
我喜欢玩: {{ game1 }}
 
-

index.html

"en">
    "UTF-8">
    
 
这是首页
 

variable.html

"en">
    "UTF-8">
    
 
我的兴趣爱好：{{ hobby }}
person的姓名是：{{ person.name }} , person的年龄是：{{ person.age }}
 
我的兴趣爱好：{{ user.username }},{{ user.email }}
 

from flask import Flask, render_template
 
app = Flask(__name__)
# app = Flask(__name__, template_folder=r"模板目录")
 
@app.route('/')
def hello_world():  # put application's code here
    return render_template("index.html")
 
 
@app.route("/game")
def game():
    game1 = "游戏"
    return render_template("game.html", game1=game1)
 
 
class User():
    def __init__(self, username, email):
        self.username = username
        self.email = email
 
 
@app.route("/variable")
def variable():
    hobby = "游戏"
    person = {
        "name": "张三",
        "age": 18
    }
    user = User("李四", "xx@qq.com")
 
    return render_template("variable.html", hobby=hobby, person=person, user=user)
 
 
@app.route("/variable2")
def variable2():
    hobby = "游戏"
    person = {
        "name": "张三",
        "age": 18
    }
    user = User("李四", "xx@qq.com")
 
    context = {
        "hobby": hobby,
        "person": person,
        "user": user
    }
 
    return render_template("variable.html", **context)
 
 
if __name__ == '__main__':
    app.run()