Before also wrote Python smtplib send mail, it is based on Smtpmlib module write application, here is to use flask write a simple API, the specific application scenario is, if a LAN environment, only one host can external network outgoing mail. Other hosts are not available outside the network. This host initiates a Flask API mail outgoing service, when other hosts need to send an alarm message, it can be s
, And gets all the content, and then encapsulates all the values in the configuration file into the profile template created in the previous stepPrint (App.config.get ("CCC"))========= Way Three: The way of the object ============os.environ[' flaks-settings '] = ' settings.py '=============== mode Four (recommended): The way of the string, convenient operation, not to change the configuration, directly change the string on the line ==============App.config.from_object (' Settings. DevConfig ')--
interface, so we can focus on a function to process a URL. As for the URL-to-function mapping, it is given to the web framework.
Because it is easy to develop a web framework in Python, Python has hundreds of open-source web frameworks. Here we do not discuss the advantages and disadvantages of various web frameworks, directly choose a more popular web framework--flask to use.
Writing a web App with flask
Flask provides a signal (signals) function, which is a message distribution mechanism. Similar to hooks (Hooks). Using the signal function can reduce the coupling of the program and decompose the complex business model. For example, after updating the product data, you can send a signal. When there is a function to process the product data, the signal can be captured for processing. For example, to create a product cache, or to update the search index
Flask provides a signal (signals) function, which is a message distribution mechanism. Similar to hooks (Hooks). Using the signal function can reduce the coupling of the program and decompose the complex business model. For example, after updating the product data, you can send a signal. When there is a function to process the product data, the signal can be captured for processing. For example, to create a product cache, or to update the search index
In a previous article, using Python's flask to implement a RESTful API server side simply demonstrated the flask Real API server, which mentioned that because of the stateless principle, there is no session cookie, if the access needs to verify the interface, A client request must send a user name and password each time. Typically in real-world apps, the username and password are not sent every time.In this
This article describes how to use the Flask framework to obtain user IP addresses in python. The example shows how to use the remote_addr framework to obtain IP addresses in Python, which is of great practical value, for more information about how to use the Flask framework to obtain user IP addresses, see the following example. Share it with you for your reference. The details are as follows:
The followin
Exploration of server template injection in Flask/Jinja2 (1)
If you haven't heard of SSTI (server-side template injection) or do not know enough about it, we suggest you read an article written by James Kettle before that.As a professional security engineer, our job is to help enterprises make risk decisions. Discover threats to the product in a timely manner. The impact of vulnerabilities on the product cannot be accurately calculated. As a person wh
Automated O M: website svn Code Update (flask + saltstack) and svnflaskPeriodic summary: It took about a week to complete the automatic website upgrade function. Many problems were encountered and many problems were learned. Here is a summary. 1. Overall architecture: backend: nginx + uwsgi # nginx provides web Services. uwsgi parses python code. Foreground: flask + bootstrap + html #
Use the SQLAlchemy tutorial in the Python program and Flask framework, flasksqlalchemy
ORMOnce upon a time, when programmers were developing SQL statements with fear, they always had to worry about it. What should they do if the SQL statements were wrong and the database was broken? Or to obtain some data, internal and external connections, function stored procedures, and so on. Without a doubt, if I don't understand this, I think it's a twist. Maybe
# -*- coding: utf-8 -*-
def is_isbn_or_key(word):
isbn_or_key = 'key'
if len(word) == 13 and word.isdigit():
isbn_or_key = 'isbn'
short_word = word.replace('-', '')
if '-' in word and len(short_word) == 10 and short_word.isdigit():
isbn_or_key = 'isbn'
return isbn_or_key
Call this method in the main file, remember to pass the value, and receive the value returned
# -*- coding: utf-8 -*-
from flask
This is the second article in The Flask framework's Learning Guide series. it mainly describes how to create a simple blog system for small projects, if you have any need, you can refer to the previous article about building a flask development environment. Today, we will continue to build a practical project-blog system.
The blog system is very simple. there is only one page, and the Sparrow is small and
Python Flask module and pythonflask Module
The module is a file containing response text, which contains the dynamic part represented by a space variable. The specific value is only known in the request context. Replace the variable with the actual value and return the final response string. This process is called rendering. To render the module, Flask uses a powerful template engine named Jinja2.
I. Jinja2
This article mainly introduces the Jinja2 template engine learning tutorial in the Python Flask framework. the usage of Jinja2 template engine is also an important knowledge in Flask Web development, for more information, see the template function of Flask. it is implemented based on the Jinja2 template engine. The template file is stored in the current subdirect
Storing data in a database is an integral part of any software application. Regardless of the control of the database there is a master control of that data. Blockchain technology stores data in chunks within a blockchain network. As a result, as long as a node is synchronized with the network, they get a copy of the data in the chunk. Therefore, there is no specific data master in this technology.In this tutorial, we'll write a smart contract (which I'll explain further) to keep the user data o
Flask is a Lightweight Web application framework written using Python. Its WSGI(Web Server Gateway Interface) Toolbox uses Werkzeug , and the template engine uses Jinja2 . Its flexible, easy to learn features, especially for beginners to quickly understand the Python web development framework. This paper mainly introduces the characteristics of flask in a simple case. 1. Installation and commissioning
Flask Web AppFirst, IntroductionRecently developed to use a test environment, is such a structure of nginx+uwsgi+flask. Here are some records for deploying a simple Python application on a centos system using the flask architecture. Then use Nginx as the front-end reverse proxy to set up the UWSGI application gateway to process the Web application.Second, conditi
Flask + uwsgi + Nginx + Ubuntu deployment, flaskuwsgi
I learned flask for a while, but I have never done any deployment. So I thought about how to deploy it. Think about it. Let's get through the service first, so I thought about how to implement the service first, here we chose Flask + uwsgi + Nginx + Ubuntu, and Python chose 2.7.2. This is the built-in learning
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