Python

The nature of web frameworksPython's web framework is divided into two main categories:1. Write your own socket and handle the request yourself2, based on WSGI (web Server Gateway Interface Web Services Gateway Interface), processing the request

Process-oriented VS object-orientedProgramming paradigmProgramming is a programmer with a specific syntax + data structure + algorithm composed of code to tell the computer how to perform the task of the process, a program is a programmer in order

Problem: Finding and replacing text in a stringSolution:1. For simple mode: str.replace (old, new[, Max])2. Complex mode: Use the re.sub ( matching mode , newstring, oldstring[, replace number]) function in the RE module3, RE.SUBN () can get the

Introduction to JavaScriptJavaScript is a literal-translation scripting language, which is a dynamic type, a weak type, a prototype-based language, and a built-in support type. Its interpreter, known as the JavaScript engine, is widely used as a

The function with yield is called generator (generator) in Python, what is generator?Let's throw away the generator and show the concept of yield with a common programming topic.How to generate Fibonacci columnsThe Fibonacci (FIBONACCI) Number

Problem: Remove duplicate elements from the sequence, but still leave the remaining elements in the same orderSolution:1. If a value in a sequence can be hashed (hashable), it can be resolved by using the collection and the generator.2, if the

Learn about regular expressions in Python today. On the syntax of regular expressions, there are many studies on the Internet without much explanation. This article mainly introduces the regular expression handler functions commonly used in Python.

The Python subclass calls the method of the parent classPython is similar to other object-oriented languages where each class can have one or more parent classes that inherit properties and methods from the parent class. If a method is called in an

JINJA2 requires more than Python2.4 version. InstallationThere are several ways to follow Jinja, and you can choose different ways to do it according to your needs. Use Easy_install or PIP: These two tools can be automatically downloaded from

The OS module provides new/delete/view file properties for directories or files, as well as path operations for files and directories. For example: absolute path, parent directory ... However, the operation of the OS file should also include

Value and Assignment Class actress (): def __init__ (self): self.name = ' tianxin ' self.age = 5 There are two member variables in class actress name and age. Outside of the operation of the class's member variables, mainly including the

1. JSON INTRODUCTIONJSON (JavaScript Object Notation) is a lightweight data interchange format. Easy for people to read and Write. It is also easy for machine parsing and Generation. It is based on JavaScript programming Language, standard ECMA-262

Python obtains the system iops sample code and pythoniops sample code. Iops Overview Iops is mainly used for data. This indicator is an important reference for database performance evaluation. iops refers to the number of read/write (I/O) operations

Python journey 1.3 (first knowledge of python), python journey 1.3 first Knowledge 1. dictionary. A dictionary is a ing data type in python. It consists of key-value pairs. Almost all types of python objects can be used as keys. However, it is

Analysis of syntax and conversion methods for different operating systems in Python This article describes the syntax and conversion methods of different hexadecimal formats in Python. We will share this with you for your reference. The details are

Notes on the next day for getting started with python, and the next day for getting started with python Main program file flagIf _ name __= = "_ main __": When the program executes python 1.py, the program 1.py _ name _ is mainTo call other files, __

For example, the use of thread locks in Python programming and python Programming Lock Python's built-in data structures, such as lists and dictionaries, are thread-safe. However, simple data types, such as integers and floating-point numbers, are

A Preliminary Study on python decorators and a preliminary study on python decorations 1. contains a decorator 1 # encoding: UTF-8 2 3 ############ contains a decorator ######### 4 def outer (func ): 5 def inner (* args, ** kwargs): # To decorate f1

Object-oriented advanced, python object-oriented advanced This topic describes the Python class members, member modifiers, and special members of the class. The class member diagram is as follows: Note: Only the content of common fields in all

Python learning day 5 List and tuple, pythontuple List and tuple: Python provides a type similar to the C language array, but it is quite simple to use. Let's talk about list and tuple in this magical python.List type: 1. Directly paste the Code: L =