Python

1. Subplots%matplotlib NotebookImportMatplotlib.pyplot as PltImportNumPy as Npplt.figure ()#subplot with 1 row, 2 columns, and current axis is 1st subplot axesPlt.subplot (1, 2, 1) Linear_data= Np.array ([1,2,3,4,5,6,7,8])#plot exponential data on

Enumeration is a common feature to look at the Python enumeration. from enumImport Enummonth= Enum ('Month', ('Jan','Feb','Mar','APR',' May','June','Jul',' the','Sep','Oct','Nov','Dec'))Definition of enumeration First, define the

Sockets are also commonly referred to as " sockets ". The two programs on the network realize the exchange of data through a two-way communication connection, one end of this connection is called a socket. The socket is the network connection

ReflectionThe dynamic assembly is implemented, and the properties and methods in the class are reflected through the string.Yi, hasarttr (obj,name_str)Function: Determines whether an object in obj has an attribute or method of the corresponding NAME_

Property methodThe function of a property method is to turn a method into a static property by @property .Class Dog (object): def __init__ (self,name): self.name = name @property def Eat (self): print ("%s Is eating

1. Using open () BIF opens a disk file, creates an iterator to read data from a file, and reads one data row at a time.2. The ReadLine () method reads a row of data from an open file.3. The Seek () method can be used to "back" the file to the

20-day Python full stack development primer to Video MasteryFree Registration Link: https://ke.qq.com/course/206831Knowledge of this course: take you to understand the opportunities and challenges that python presents to us today. A comprehensive

ImportPyautogui, time, OS, Pyautoguios.chdir ('C:\\users\\administrator\\python35-32\\test\\kuaisu') Guests= Open ('SendMesTo.txt') #打开好友名单 forNinchGuests:pyautogui.click (1300, 1, button=' Left') #用的是QQ, move the mouse to the top right corner of

Before we start, let's explain two methods in Urllib2: info and GeturlResponse (or Httperror instance) of the reply object returned by Urlopen has two useful methods, info () and Geturl ()1.geturl ():This returns the actual URL obtained, which is

1. File structure: Fixed structure of HTML file: ... ... HTML is the root tag head definition document header, contains: title, script, style, link, meta body is the main content of the page, including: H1,h2-h6, p, a, img2. Recognize head

__doc__ View the description of the tip__MODULE__ represents the module where the object of the current operation is located__CLASS__ represents the class to which the object of the current operation belongs__init__ construction method automatically

dict ()function: The dict () function is used to create a dictionary. Returns a dictionary.Grammar:Class Dict (**kwarg) class dict (Mapping, **kwarg) class Dict (Iterable, **kwarg)Parameter description: **kwargs--Keywords Mapping--the

ReferenceFirst, the previous example:>>> val = [1]>>> val[0] = val>>> val[[...]]The code above makes Val contain itself, and produces an infinite recursion. The above example shows that the variable name in Python is a reference type, and the

Condition testThe core of each if statement is an expression with a value of ture or false, which is known as a condition test. Python determines whether to execute the code in the If statement based on the value of the condition test as ture or

This article mainly introduces the Python random generation of the module randomly use instances, this article directly to show example code, the need for friends can refer to the following code: #!/usr/bin/env python#coding=utf-8import random#

Len if a class behaves like a list, you have to use the Len () function to get the number of elements. For the Len () function to work properly, the class must provide a special method Len (), which returns the number of elements. For example, we

Python calls win32pai to operate cmd, pythonwin32pai Example: # Coding = utf-8import subprocessfrom time import * import win32apiimport win32conimport win32guisubprocess. popen ('C: \ windows \ system32 \ cmd.exe ') sleep (1) a = 65; B = 66; C = 67;

In Python, how does one obtain the field list after the query result of the module pymysql? Preface When using pymysqlfetchall()Orfetchone()The query results can be obtained, but the returned data does not contain field information (not as

Python + requests + unittest API test, requestsunittest The Black Bear searched for information related to the interface test on the Internet. Most of them focused on maintaining the use case in a text or table in the form of data-driven. They did

Simulate logon using the Request library in Python (1): The font library (no encryption, no verification code), pythonrequest Such simple (Insecure) login forms are rare. The following figure shows the log-on Form of the font library, saving