flask app

update$ Brew install pythonCreate a blog directory, generate an independent Python virtual environment, and install the required Flask and Flask-FlatPages modules in this environment:Copy codeThe Code is as follows:$ Mkdir blog$ Cd blog $ Virtualenv flaskNew python executable in flask/bin/pythonInstalling setuptools, pip... done. $

Python 2. x. support for Python 3 is coming for gevent, so the situation is likely to improve in the near future. (Update: Flask-SocketIO version 1.0 is fully compatible with Python 2.7 and 3.3 +, see bottom of the article for more information ). The latest status is that Flask-SocketIO v1.0 can run on Python 2.7 and Python 3.3 +. Below is an example Flask appl

server and a Web application or application framework to enhance the common denominator of portable web application development. WSGI is designed based on the existing CGI standards.Many frameworks have their own WSGI servers, such as Flask,webpy,django, CherryPy, and so on. Of course, the performance is not good, the Web server comes with more testing purposes, the release of the use of the production environment of the WSGI server or the joint ngin

Label:The Flask-sqlalchemy library makes it easier for Flask to use SQLAlchemy, a powerful relational database framework that can either manipulate the database using ORM or use the original SQL commands. Flask-migrate is a data migration framework that needs to be manipulated through the Flask-script library. I. Confi

for x in sys.meta_path if self != x] + [self] def find_module(self, fullname, path=None): if fullname.startswith(self.prefix): return self def load_module(self, fullname): modname = fullname.split('.', self.prefix_cutoff)[self.prefix_cutoff] for path in self.module_choices: realname = path % modname __import__(realname) Iii. Principles of flask sqlalchemy Sqlalchemy is the most powerful orm

): return Self.render (' admin/test.html ') If the user accesses the index view, the template file admin/myindex.html will be rendered. Similarly, the result of accessing the Test view is that admin/test.html is rendered. So how does this approach help to structure the management interface? With these built-in parts, you can implement highly customizable, reusable features. For example, Flask-admin provides an off-the-shelf SQLAlchemy model interf

Flask-Migrate can help the Flask application to complete database migration through a preset Python script. here we will take a look at the tutorial on using Flask-Migrate to expand database migration in the Python Flask framework, when upgrading the system, you may need to update the data structure on the server. the

Tags: Introducing model ROM column REM move use register modSteps to use: 1. Introduction of Flask-sqlalchemyfrom import SQLAlchemy = SQLAlchemy ()　　 2. Register flask-SQLAlchemy db.init_app (APP) 3. Import the tables in models　　 from Import * 4. Write class inherits Db. Model 　　class Users (db. Model): 　　__tablename__'users' = Column (Integer, Pri

In the Python Flask framework, use Flask-Migrate to expand the database migration tutorial, flaskflask-migrate When upgrading the system, we often encounter operations such as updating the data structure on the server. The previous method was to manually write an alter SQL script for processing, and we often find omissions, as a result, the program cannot be used normally after being published to the server

register a Module? The following example shows how the Flask application registers a Module. 1. Project Structure The project structure of this simple example is as follows: /myapplication /__init__.py /app.py /views /__init__.py /admin.py /blog.py The code for the admin. py and blog. py modules is as follows: # admin.pyfrom flask import Moduleadmin = Module(__name__)@admin.route('/')def index(

created in_ Init _. pyFile, then we can safely import and reference each package. Setting. py: configuration file, database username and password, etc. 3. Develop code 1. Run the project first: 1) write the _ init _. py file to create a project object. The Code is as follows: #-*-Coding: UTF-8-*-from flask import Flask # create a project object app =

(self): return Self.render (' anotheradmin.html ') @ Admin.expose ('/test/') def Test (self): return Self.render (' test.html ') # Create flask Appapp = Flask (__name__, template_folder= ' templates ') App.debug = true# Flask views@app.route ('/') def index (): return ' Click me to get to Admin !' # Create Admin interfaceadmin = admin. Admin () Admin.ad

: {% extends 'admin/master.html' %}{% block body %} Hello World from AnotherMyAdmin! If AnotherAdminView adds the parameter endpoint = 'xxx', you can write it as url_for ('xxx. text'). Then, the page URL changes from/admin/anotheradminview/to/admin/xxx.If the parameter url = 'aaa' is specified at the same time, the page URL will be/admin/aaa, And the url priority is higher than the endpointAdmin Copy codeThe Code is as follows:Class Admin (app = None

' The content in the angle brackets is dynamic content. Any URL that matches the static part will be mapped to this route. The dynamic part of the route uses a string by default, but you can also use the type definition. For example,/usr/3. Start the server if __name__ == '__main__': app.run(debug=True) Some option parameters can be accepted by the app. run () function to set the operation mode of the web server. Enabling the debug mode during the

Interpretation of Flask source code (1) and flask source code FlaskIs a lightweight Web application framework written in Python. Flask is only a bridge between Werkezug and Jinja2. The former implements a suitable WSGI application and the latter processes the template. Of course, Flask is also bound to some common stan

multi-process to multi-threaded to the association, this choice we will not be involved in this course. Rest adaptability: Although flask and Django are the same, the initial starting point is the Dynamic Web application on the server side. But Flask's design makes it quite suitable for resource-oriented rest architectures, which is a considerable advantage of flask versus Django in the increasingly mobile

migration warehouseFirst, we want to install flask-migrate in a virtual environment:Pip Install Flask-migrateThe initialization method for this extension is as follows:from = Migrate (app, db) Manager.add_command ('db', Migratecommand)To export the database Migration command, Flask-migrate provides a Migratecommand cl

multi-process to multi-threaded to the association, this choice we will not be involved in this course. Rest adaptability: Although flask and Django are the same, the initial starting point is the Dynamic Web application on the server side. But Flask's design makes it quite suitable for resource-oriented rest architectures, which is a considerable advantage of flask versus Django in the increasingly mobile

Flask series tutorials (8) -- Flask-Migrate, flaskflask-migrateFlask-Migrate In the actual development environment, database changes often occur. Generally, we do not manually modify the database, but modify the database.ORMThe corresponding model, and then map the model to the database. At this time, it would be very useful to have a tool dedicated to this kind of thing.flask-migrateThis is what we do.flas

Overview To develop a large project with flask, you must have a good project file structure, which records the configuration of the Flask minimum development project. The Python version used here is 3.5.1,flask version 0.11.1. test Environment Python version: 3.5.1 flask version: 0.11.1 pycharm version: 5.0.3 main dir