Tag：python
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Time：2021-7-25
This article describes the principle and basic usage of Python decorator. Share with you for your reference, as follows: Trimmer: Meaning: add new functions to the function without changing the source code of the original function and the calling mode of the original function in the whole project Since it is not allowed to change […]
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Time：2021-7-24
This article gives examples of Python opening files, file reading and writing operations, with mode, and common file functions. Share with you for your reference, as follows: Open file: In Python 3, the function to open a file is: open(file, mode=’r’, buffering=None, encoding=None, errors=None, newline=None, closefd=True) Parameter Description: File — file name Mode – open […]
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Time：2021-7-23
1、 Background and research status In the process of the development of Internet in China, the PC Internet has become increasingly saturated, but the mobile Internet is showing a blowout development. Data show that by the end of 2013, China’s mobile Internet users had exceeded 500 million, accounting for 81%. With the decline of the […]
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Time：2021-7-22
This paper introduces the definition and import of Python module__ name__ Usage. The details are as follows: Related contents: What is a module Module import Module import Import from module Peer directory import Different level directory import In directory import out of directory Import from out of directory to in directory __name__ What is a […]
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Time：2021-7-20
This article describes the python package__ init__. The function and usage of py. The details are as follows: Package: In order to organize modules well, multiple modules are combined into a package, so the package is used to store Python modules A package is usually a folder. When a folder is used as a package, […]
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Time：2021-7-18
In this paper, examples about Python dictionary generation, set generation, generator usage. The details are as follows: Dictionary generation: Like list generation, dictionary generation is used to generate dictionaries quickly. The difference is that dictionaries need two values #d = {key: value for (key, value) in iterable} d1 = {‘x’: 1, ‘y’: 2, ‘z’: 3} […]
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Time：2021-7-17
This article mainly introduces the python singleton design pattern implementation analysis, the article through the example code introduction is very detailed, for everyone’s study or work has a certain reference learning value, need friends can refer to The so-called singleton means that when a class creates an object, there is only one instance in the […]
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Time：2021-7-16
This paper introduces the functions and usages of Python modules sys, OS, time and random. The details are as follows: sys: Introduction: it mainly includes functions related to the interaction between Python compiler and system. Common functions: import sys Print (sys. Argv) # this file name, which is the parameter when the program has been […]
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Time：2021-7-15
This article mainly introduces python__ new__ Built in static method use parsing, this article through the example code is very detailed, for everyone’s study or work has a certain reference learning value, need friends can refer to When you create an object with the class name (), the Python interpreter calls__ new__ Method to allocate […]
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Time：2021-7-14
This article mainly introduces the python global variable reference and modification process analysis, the article through the example code is very detailed, for everyone’s study or work has a certain reference learning value, need friends can refer to 1、 Citation The global variable is only used as a reference. If its value is not modified […]
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Time：2021-7-13
Title: fight against the landlord Playing card is a very popular game. There are many games related to playing card in computer. For example, in the windows operating system comes with the card, heart war, etc. In the game of playing cards, it is often necessary to carry out the shuffle operation, that is, to […]
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Time：2021-7-12
This article mainly introduces the performance test process analysis of Python built-in data type list methods. The sample code is introduced in great detail, which has a certain reference learning value for everyone’s study or work. Friends who need it can refer to it testing environment The code involved in this paper is tested in […]
