35.python full Stack Road: Facing the object advanced

Facing the object Advanced 1. Self in multiple inheritanceClass A: def bar (self): print (' Bar ') self.f1 (') ' the ' itself ' represents the object of Class D D1D1 if you want to find F1 in his parent class, you should first go to

Python based on the TK text editor

1 #Coding=utf-82 ImportSys,os3 ImportTkfiledialog4 fromTkinterImport*5 fromTkfontImportFont6 7 8 Print "You are Welcome to use the Editor:", str (sys.argv[0]) [:-3]9 Ten classWrite (): One A def __init__(self): -self.tk=Tk () - ifLen

Python scrapy IP proxy settings

In the Scrapy project, build a Python directory that is similar to the spider and add a py file with the contents below# Encoding:utf-8Import Base64ProxyServer = Proxy server address # #我的是 ' http://proxy.abuyun.com:9010 '# Proxy Tunneling

Python Data analysis and visualization

Introduction URL: Https://www.kaggle.com/benhamner/d/uciml/iris/python-data-visualizations/notebookImport Matplotlib.pyplot as PltImport Seaborn as SNSImport Pandas as PDImport data:Iris=pd.read_csv (' E:\\data\\iris.csv ')Iris.head ()To make a

Python's While loop statement (instance)

#While Loopnumbers=[1,2,4,6,7,8,12]enent=[]odd=[] whileLen (Numbers) >0:number=Numbers.pop ()if(number% 2 = =0): enent.append (number)PrintNumber'is even' PrintnumbersElse: odd.append (number)PrintNumber'not even'PrintenentPrintOdd#continue

"Python built-in functions"

Built-in functionsIn short, it is the function of Python3 itself. ABS (x) ABS () returns the absolute value of a number. If a complex number is given, the return value is the modulus of the complexPrint (ABS (-1100))Output: 1100

[Python] executes Linux shell commands with the commands module

When writing operations scripts in Python, it is often necessary to execute the commands of the Linux shell, the commands module in Python is dedicated to invoking the Linux shell command and returning the status and results, here are the 3 main

The difference between Python 2.x and python3.x

This week began to learn python, because the books are based on python2.x, and I installed the Python3.1, so the book is written in a lot of places do not apply to Python3.1, specifically on Google search on the 3.x and 2.x difference. It is hereby

Python implements Base64 algorithm encryption

Python itself has base64 encryption module, but written in C, encapsulated as. So file, unable to view the source code, in the spirit of learning, the implementation of their own, the algorithmPrinciple reference on BASE64 coding algorithm.The code

Deep copy and shallow copy of Python list-and method of initializing blank list (2)

Pick up an articleIn fact, Python is still very flexible with deep copy and shallow copy processing, and even has a special toolkit copy to do somethingConsider the following copy of this list:Known Lista is a list that has already been

Python Grey hat Learning impressions

Gray Hat python python programming for hackers and reverse engineersPython grey hat: The path of Python programming for hackers and reverse project architectsAlmost the same two weeks ago to see the book, the mood is very excited ah, determined to

Summarize Python's knowledge of namespaces and scopes

The following small series for everyone to bring a python advanced _ about the namespace and scope (detailed). Small series feel very good, now share to everyone, also for everyone to make a reference. Let's take a look at it with a little knitting.

Python makes simple calculators with PYQT5 and ERIC6

This article mainly introduces the python3.5 + PyQt5 +ERIC6 Implementation of a calculator code, in the Windows7 32-bit system can run the calculator perfectly, interested can understand. A simple calculation can now be achieved. Before the

Python uses two ways of sending mail SMTP and Outlook samples

This article mainly describes the use of two kinds of Python e-mail SMTP and Outlook samples, with a certain reference value, interested in small partners can refer to. SMTP is an SMTP server that calls 163 of mailboxes directly and needs to be set

Discussion on the current situation, prospect and opportunity of Web source

This article mainly describes the Python implementation of the download Web page source function, involving Python based on the HTTP request and response to the implementation of the Web page source read function related operation skills, the need

Analysis of Common Python encryption module usage [MD5, sha, crypt module], pythoncrypt

Analysis of Common Python encryption module usage [MD5, sha, crypt module], pythoncrypt This example describes the usage of common Python encryption modules. We will share this with you for your reference. The details are as follows: 1. md5

Python uses the time module to implement a specified time trigger example, python trigger

Python uses the time module to implement a specified time trigger example, python trigger This example describes how to use the time module to implement a specified time trigger in Python. We will share this with you for your reference. The details

Chapter 2 scrapy-redis distributed crawler, Chapter 2 scrapy-redis

Chapter 2 scrapy-redis distributed crawler, Chapter 2 scrapy-redis9-1 Key Points of distributed crawling 1. Advantages of distributed architecture Make full use of the bandwidth of multiple machines to accelerate crawling Make full use of the IP

Product Manager learn Python: logical judgment and operators, product manager python

Product Manager learn Python: logical judgment and operators, product manager python This is the 6th article on Python, which mainly introduces logical judgment and operators. (1) Logical judgment: To implement a complex functional program, logical

Python algorithm representation conceptual literacy tutorial, python algorithm literacy tutorial

Python algorithm representation conceptual literacy tutorial, python algorithm literacy tutorial This article explains the concept of python algorithm representation for your reference. The specific content is as follows: Constant order O (1) A

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