, abbreviated as WSGI) is a simple and common interface between a Web server and a Web application or framework defined for the Python language. Similar interfaces have appeared in many other languages since Wsgi was developed.
2. What is a template engine?Have you built a website? Have you ever faced the problem of keeping your website style consistent, and have you had to write the same text multiple times? Have you ever tried to change the style of this website?If your site contains only
:/home/frank/Documents/helloflask/helloflask_nginx.conf /etc/nginx/conf.d/Restart Nginx:sudo /etc/init.d/nginx restartAt this time to refresh the server before the public IP (or bound domain name), then see is not "welcome to nginx", but "502 bad way", because we have not started Uwsgi, now we will save the following content as Helloflask_ Uwsgi.ini (in XML format is also possible, depending on the document): #application ' s base folderbase =/ Home/frank/documents/helloflask #python module to
1. Hello world! in FlaskAfter creating a flask project using Pycharm, a flask app is created by default, where each line of code represents the meaning of the code in theFrom flask Import Flask # import Flask Module If no this m
configuration enables cross-station request attack protection, which you need to turn on in most cases, which makes your application more secure.
The Secret_key setting is valid when CSRF is enabled, which generates an encrypted token for form validation, and you want to make sure that the key is complex enough not to be simply inferred.
The configuration file is now basically available. Project Creation Complete We can create the following files and edit (fileapp/__init__.py):
From
renders the entire FLASK-WTF form with a pre-defined form style in the bootstrap, which can be done only once in a single call.{% import "boostrap/wtf.html" as WTF%} {{wtf.quick_form (form)}}#使用Flask-WTF and flask-bootstrap render form {% extends "base.html"%}{% import "bootstrap/wtf.html" as WTF%}{% block title%}flasky{ % endblock%}{% block page_content%}Iv. wo
Flask.signals.Namespace class.
Subscribe to Signal
You can subscribe to the signal by using the Connect () method of the signal. The first parameter is the function to invoke when the signal is emitted, and the second parameter is optional, which is used to determine the sender of the signal. A signal can have multiple subscribers. You can use the disconnect () method to unsubscribe from the signal.
For all core flask signals, the sender is
Now continue to learn how to use celery in an integrated framework.Using celery in flaskIntegrating celery in flask requires two points:
The name of the instance object that created the celery must be the name of the Flask application app, or the celery startup will fail;
The celery must be able to load the initialization file successfully.
Cele
path of the js file must be specified in the Code at the front end. These paths are "relative paths ". We strongly recommend that you save all files in UTF8 format to avoid Chinese garbled characters. [Directory structure] Fig 1 directory structure [static Directory] -- jqury. js templates templates --main.html [flask-jquery.py]2. Simple Example[1] Front-end templates --main.html
Flask JQuery
+=?
gevent## prompts the following information, without error, indicating successful installation Running setup.py install for Greenlet Running setup.py install for geventsucces Sfully installed gevent-1.0.2 greenlet-0.4.7download and compile the installation NginxUseradd wwwwget Http://nginx.org/download/nginx-1.8.0.tar.gztar zxf nginx-1.8.0.tar.gz CD nginx-1.8.0./configure--Prefix=/usr/local/nginx--user=www--group=www--with-http_stub_status_module--with-http_ssl_modulemakemake Install5. New
my new system, so there is no pip, so I will install pip first.
sudo apt-get install python-pip
Run the following command to install flask:
pip install flask
After installation, we can test it,
Import flask
If no error is reported, our flask is successfully installed. Next, we will install ngnix and uwsgi.
sudo apt-ge
installation package without using the sudo command.
[leo@linux-vps] mkdir python3.4-flask[leo@linux-vps] cd python3.4-flask [leo@linux-vps python3.4-flask] pyvenv-3.4 venv
To create a virtual environment, you need to use the pyvenv-3.4 command. The above Command will create a directory named lib inside the venv folder, where the package on which the project dep
Flask-based simple blog Project Creation (Database Operations), flask blog
After the global variables are configured, copy and paste the template to the template directory. Then, we have finished the V (view) in MVC. Now we are working on M and C.
M:
In the global variable settings in my last essay (http://www.cnblogs.com/hachimei/p/6636654.html), there is a User class that we create tables in our own datab
Flask page, flask
We will encounter such problems during our learning process, that is, we will find that paging is required during our learning process. Here, we will introduce the pagination mentioned in the book.
@app.route('/',methods=['GET'])@app.route('/
This is the paging data that I read from the database. How can we paging the data?
Then we need to use a separate page to save our paging-relat
Python Study Notes _ 05: Use Flask + MySQL to Implement User Login registration, addition, deletion, query, modification, and _ 05 flask
For more information about the code in this article, see the two blogs. For more information about the source, click the instructions in the link at the end of the article.
Running effect:
Home page:
Registration page:
Logon interface:
After logging on to the
data in Table A through the third joined table. data entries are associated, one piece of data in Table B can also be associated with any multiple pieces of data in table A. 3. Orm advantage 1 encapsulates all operations in the database, this greatly improves development efficiency. 2. You can omit the huge data access layer, perform crud operations on data without using SQL encoding. 3. Configure the ORM framework 1 Database and framework in Python and fla
Virtual Environments
Using Pipenv to create a virtual environment and project bindings, install:E:\py\qiyue\flask>python3 -m pip install pipenv
and project bindings: Into the project directory pipenv install , and then pipenv shell into the virtual environment, then you can install a variety of packages, for example pipenv install flask ,
Common pipenv commands, exit exit , enter pipenv shell ,
extended Full-text search database name (fileconfig.py):Whoosh_base = Os.path.join (basedir, ' search.db ')modifying Modules
When combining Flask-whooshalchemy and flask-sqlalchemy, we need to be indexed when the appropriate module class (fileapp/models.py) specifies which data:
From app Import app
import fla
This article mainly introduces how to use the Python framework. This article describes how to install the Flask framework. the code is based on Python2.x. if you need it, you can refer to the WSGI framework, we found that a Web App is actually writing a WSGI processing function to respond to each HTTP request.
But how to handle HTTP requests is not a problem. The question is how to handle 100 different URL
Although Flask's request object provides sufficient support for form processing, there are some tasks that are tedious and repetitive. For example, generate HTML code for the form and validate the submission form data.The FLASK-WTF extension solves these problems. It is based on wtformsPrevent cross-site request forgeryCross-site requests forgery (Cross-site request forgery), also known as One-click attack or session riding, is usually abbreviated as
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