Flask
pip install -U FlaskFlask
pip install -U Flaskpython flask
from flask import Flask
app = Flask(__name__)
@app.route('/')
def index():
return "Hello world!" #if you want to render a .html file,
# import render_template from flask and use
#render_template("index.html") here.
if __name__ == '__main__':
app.debug = True
app.run() #go to http://localhost:5000/ to view the page.flask
from flask import Flask
app = Flask(__name__)
@app.route('/')
def hello_world():
return 'Hello, World!'flask
# This is a basic Flask Tutorial
# First of all, if something doesn't work, you messed up.
# Too start of, make a project folder and install flask with a venv or just normally.
# You can install flask with this command: pip install Flask
# (type this into you're terminal)
# I f you get an error message, it is because you a, dont have python3 installed,
# b: youre on a mac that has Python3 and python2 installed (this is probably the case)
# If you dont have python3 installed then go ahead and install it. If it is case b, then type in
# pip3 install Flask
# Now, lets start by making a file named app.py
# You can return basic html or text when returning in the
# Hello World function. The @app.route('/') defines that the function
# Will return at the page '/'. Debug mode is turned on on and the website
# Will run at 0.0.0.0:5000 aka localhost:5000.
from flask import Flask #Import Flask
from flask import render_template #Import render template function
app = Flask(__name__)
@app.route('/')
def hello_world():
return '''<h1>Welcome to Flask!</h1><a href=" /about">About Me!</a>'''
# You can also return a Template. For that, make a Templates folder
# and create a file named about.html inside of the Templates folder
# html file contents (copy and paste it without the hashtags):
#<html>
# <body>
# <h1>About Me</h1>
# <p>Hi, this is me, I am a Python programmer who is currently learning Flask!</p>
# <a href="/">Home</a>
# </body>
#</html>
# (You can edit it if you want)
#Just for you info, you your Project folder should look like this:
# ProjectFolder:
# app.py
# Templates:
# about.html
# Lets make a site at localhost:5000/about and use the template we created
@app.route('/about')
def about():
return render_template("about.html") # You can do this with every html file in the templates folder
#If you would like to have the same page with 2 diffrent urls (this works with as many as you want)
#You can do this:
@app.route('/page1')
@app.route('/page2')
def page1andpage2():
return 'Page1 and pag2 are now the same!'
#ps: you dont have to name the function page1andpage2
#you can name every function as you like. It doesn't matter.
#The only thing that matters about the url is the decorator (@app.route('blabla'))
#You can now acces this site on localhost:5000/page1 and on localhost:5000/page2 and they are both the same.
#Since I dont want to make this "Grepper Tutorial" I am prabably going to make a 2cnd part if guys like this
if __name__ == '__main__':
app.debug = True
app.run("0.0.0.0", 5000 , debug = True) #If you want to run youre website on a diffrent port,
#change this number ^what is flask
Flask is a web framework written in Python.
This means flask provides you with tools, libraries and technologies that allow you to build a web application.
Here a a few resources for learning Flask (I have not personally used them before):
https://youtube.com/playlist?list=PLzMcBGfZo4-n4vJJybUVV3Un_NFS5EOgX
https://realpython.com/tutorials/flask/
https://opensource.com/article/18/4/flaskwhat is flask
These are by far the best Flask tutorials there are: https://youtube.com/playlist?list=PLzMcBGfZo4-n4vJJybUVV3Un_NFS5EOgXCopyright © 2021 Codeinu
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