fake - 77 days - learn Python online for 100 days

Record#

Today I continue to study the knowledge related to flask.
About the use of templates: In the routes of flask, we can use the f function to read local HTML files and return their contents to the page. If there are variables that need to be replaced in the HTML file, we can use the replace function to replace the placeholder strings with the corresponding variable values.
About the redirect function: It is another function provided by flask for page redirection. Currently, I don't quite understand the purpose of this redirection.
In the process of learning, I discovered an important point: when the flask code is running, it will first look for the index() route function, and if it is not found, it will return a 404 error.
Today's exercise is to write a blog page, and we will use templates and the redirect function to complete it.

CODE#

from flask import Flask, redirect

app = Flask(__name__, static_url_path="/static")

@app.route('/')
def index():
    blogtitle = "R's Blog"
    link1 = "/link1"
    link2 = "/link2"
    f = open("template/index.html", "r")
    page = f.read()
    f.close
    page = page.replace("{blogtitle}", blogtitle)
    page = page.replace("{link1}", link1)
    page = page.replace("{link2}", link2)
    return page

@app.route('/link1')
def link1():
    title = "link1"
    blogdate = "Day 56 Solution"
    text = "texttexttexttexttexttexttexttexttexttexttext"
    home = "/home"
    page = ""
    f = open("template/blog.html", "r")
    page = f.read()
    f.close()
    page = page.replace("{title}", title)
    page = page.replace("{blogdate}", blogdate)
    page = page.replace("{text}", text)
    page = page.replace("{home}", home)
    return page

@app.route('/link2')
def link2():
    title = "link2"
    blogdate = "Day 57 Solution"
    text = "texttexttexttexttexttexttexttexttexttexttexttexttexttexttexttexttexttexttexttexttexttext"
    home = "/home"
    page = ""
    f = open("template/blog.html", "r")
    page = f.read()
    f.close()
    page = page.replace("{title}", title)
    page = page.replace("{blogdate}", blogdate)
    page = page.replace("{text}", text)
    page = page.replace("{home}", home)
    return page

@app.route("/home")
def seventySeven():
    return redirect("https://replit.com/@DengLe/python100day77#main.py")

app.run(host='0.0.0.0', port=81)

Translation: