How to use pycharm to quickly create a flask project

Create a new Flask project

File - New Project

choice Flask

Then the following three files are automatically included in the created folder ：

among app.py The default format of is as follows ：

from flask import Flask

app = Flask(__name__)


@app.route('/')
def hello_world():  # put application's code here
    return 'Hello World!'


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

route

Let multiple URL Show the same content

@app.route('/')
@app.route('/home')
def home():
    return 'Hello, World!'

Exhibition HTML

return Write directly behind HTML Code

from flask import Flask

app = Flask(__name__)

@app.route('/')
@app.route('/home')
def home():
    return '<h1>Hello, World!</h1>'

@app.route('/reporter')
def reporter():
    return ''' <h2>Reporter Bio</h2> <a href='/'>Return to home page</a> '''

Variable Variable Rules

imagine , We have a lot of order_name And corresponding order_id, What we need to show url As shown below ：

1. /orders/john/001
2. /orders/alice/002
3. /orders/bob/003
4. …

You can use <> On behalf of the variable , The data type can be set before the variable name

@app.route('/orders/<user_name>/<int:order_id>')
def orders(user_name, order_id):
    return f'<p>Fetching order #{
      order_id} for {
      user_name}.</p>'