Python

1. Follow Liaoche Teacher's tutorial, download and install this version, download the website2. The text editor cannot be used with Word and Windows comes with Notepad. Word does not save plain text files, and Notepad will be smart to add a few

PIL is the most common image processing library in Python, the PIL module in Python 2.x, replaced with pillow module in Python 3.x, installing Pil:pip install Pillow1, Python view some properties of the picture#!/usr/bin/env python#-*-coding:utf-8-*-

This blog series contains Python basics, front-end development, web frameworks, caches, and queues, hoping to provide a little help for kids who are learning to program!!! Python development "First article": Directory Python development

Python Chinese encodingIn the previous chapters we have learned how to output "Hello, world!" in Python, but if you output the Chinese character "Hello, the World" you may encounter Chinese coding problems.If no encoding is specified in the Python

Sys.argv[] Plainly is a bridge from the outside of the program to obtain parameters, this "external" is critical. Because the arguments we get from the outside can be multiple, we get a list, which means that sys.argv can actually be seen as a list,

#_*_ encoding:utf-8 _*_ImportJSONImportRequests#POST RequestPayload = {"Cindy":"Hello World", "python":"1078370383"}r= Requests.post ('Http://httpbin.org/post', Data=payload)Print(R.text)#output, data data transfer to form# {#"args": {},#"

First, Python2,python3 differences in the environment: Python2:1, the source code contains php,java,c, and other language norms of bad habits,2, repeat the code is particularly large. Python3: Source code is very standard, clear, simple , in line

Functions and procedures are functions that have no return value, both of which can be calledin python , the function return value is The value after return, and the procedure return value is NoneProgramming: Object-oriented, process-oriented,

#_*_ encoding:utf-8 _*_ImportRequests#Request a blog home, no parameter GET requestR = Requests.get ('http://www.cnblogs.com/cindy-cindy/')Print(R.status_code)Print(R.text)#Search for content in the blog park, get requests with parametersPar =

List-generated--A list can be generated quickly , and another listcan be deduced from a list , and the code is simple:>>> [x * x for x in range (1, 11)][1, 4, 9, 16, 25, 36, 49, 64, 81, 100]>>> [x * x for x in range (1, one) if x% 2 = = 0][4, 16,

From ABC import Abcmeta, abstractmethodnot_implemented = "Your should implement this." Class Abstractcar: __metaclass__ = Abcmeta @abstractmethod def Drive (self): raise Notimplementederror (not_implemented) class Car (Abstractcar):

Sequence　　Python has 6 total built-in sequences: Lists, tuples, strings, Unicode strings, buffer objects, and Xrange objects. #字典属于啥?The difference is that the list can be modified and tuples cannot be modified.The list can also contain other lists　　

ImportRandomImport TimedefBubble_sort (a): N=Len (a) whileN>1: forIinchRange (n-1): ifA[i]>a[i+1]: Temp=A[i] A[i]=a[i+1] A[i+1]=Temp N+=-1returnadefInsert_sort (a): N=Len (a) forIinchRange (1, N): forJinchRange (i):ifA[j]>A[i]: Temp=A[i]

While----else------The role of the while behind else means that when the while loop executes normally and the middle is not terminated by a break, the statement after the else is executedCount = 0 while Count : + = 1 print("" , Count) Else :

Python-based basic linux commands, pythonlinux# Pwd viewing the current directory/root directory is equivalent to windows 'computer '# cd (change directory) change the directory # ls view the file ls file name under the current directory view the

Python unittest module, pythonunittest 1 import unittest 2 import random 3 4 5 class Operation (object): 6 7 def _ init _ (self, num1 = 0, num2 = 0 ): 8 if not (0  

93. re, Beautifulsoup, rebeautifulsoup Navigate to this article: Introduction Basic usage Traverse Document Tree Search Document Tree Summary The re module is not described too much in the previous python advanced sections. This article is the

Python learning essay day3, python essay day3 Document read/write   # Document content SlicingF = open ('abc', 'R', encoding = 'utf-8') # abc is the document name.Count = 0;For line in f:If count = 9:Print ("-------------------------------- cut

Python obtains some attributes of the Android apk through a script, and then generates a key using the encryption algorithm ., Androidapk Python obtains some attributes of the Android apk through a script, and then generates a key using the

Python timeit module, pythontimeit 1 import timeit 2 import math 3 4 5 def myfun (): 6 for I in range (100): 7 for j in range (2, 10): 8 math. pow (I, 1/j) 9 10 timeitObj = timeit. timer (stmt = myfun) 11 t1 = timeitObj. timeit (number = 10000) 12