Python

#-*-Coding:utf-8-*-# Author:hy# @Time: 2018/2/1610:24Import Pymysql# Encapsulation Classclass Mysqlhelp (object):# Constructiondef __init__ (self, host, user, passwd, DB, port=3306):self.host = Hostself.user = userSelf.port = Portself.passwd =

Sequence• List, meta-ancestor, stringCommon:1. Each element can be indexed by index2. The default index starts from 03, can be fragmented in the form of a set of elements within a certain range4, many common operators, *,+, In/not inData with the

Interface test process encountered the DES encryption problem, with Python study for a long time did not succeed, finally find the front end to DES encryption JS method, so study a bitHere are the steps:1, first installation can also be PIP

fromdocx Import Document fromdocx.shared Import inchesdocument=Document () document.add_heading ('Document Title',0) P= Document.add_paragraph ('A Plain paragraph having some') P.add_run ('Bold'). Bold =Truep.add_run ('and some') P.add_run ('Italic.'

One: DevelopmentDevelopment language is divided into advanced and low-level languagesAdvanced languages: Python, Java, PHP, C + +, C #, GO, Ruby, etc. low-level language: C, assembly language.The high-level language corresponds to the bytecode, is

Function　　function is a kind of encapsulation supported by Python, we can decompose complex tasks into simple tasks by splitting large pieces of code into functions through a layer of function calls, which can be called process-oriented programming .

Place setup.py and other files in a directory, enter the directory to execute the Python setup.py sdist commandsetup.py#!/usr/bin/-*-coding:utf-8-*-# @Date 2018-04-18 16:38:40# @Author : Blackstone ( 971406187@qq. com) # @Do import

Although you can create instances of xiaoming, Xiaohong , and so on through the person class, these instances are not as different as they seem to be in different addresses. In the real world, distinguish xiaoming, Xiaohong to rely on their

Adorner: The essence is a function that adds additional functionality to other functions.Two main principles of adorners:1) Do not modify the source code of the modified function2) Do not modify the modified functionOpen Closure principle: Once the

1. The role of the Pickle modulepersist objects such as dictionaries, lists, strings, and so on to disk for later use2. Pickle Object SerializationPickle module The process of converting any Python object into a system byte is called a serialized

Opening : Python's function definitions are very simple, but flexible but very large. In addition to the normal definition of required parameters, you can also use default parameters, variable parameters, and keyword parameters to make the interface

Python exercises One1, a brief description of the difference between the compilation and interpretation of the language, and separately listed which languages you know are compiled, which are interpreted type?For:Concept:Compiled language: A

Concepts of Modules & Package modules (module):In the process of computer program development, as the program code more write more, in a file code will be more and more long, more and more difficult to maintain. In order to write maintainable code,

This article mainly introduces Python to solve the problem of matching parentheses, involving Python stack-based string traversal, judgment, operation to solve the parentheses matching related operation skills, the need for friends can refer to the

Below for you to share a detail of the numpy in the array of reconstruction, merging and splitting methods, has a good reference value, I hope to be helpful to everyone. Come and see it together. 1. Array Remodeling 1.1 One-dimensional arrays into

Here is a python to find out the numpy array of the maximum value and its index method, has a good reference value, I hope to help you. Come and see it together. In the list, max (list) can get the maximum value of the list, and List.index (max)

Below for you to share a Python delete the list of all the blanks in the method summary, with a good reference value, I hope to be helpful to everyone. Come and see it together. First, let's write a list with spaces: List1 = [' 122 ', ' 2333 ', ' 3

Below for you to share a Python numpy points group to go to the weight of the example, with a good reference value, I hope to be helpful to everyone. Come and see it together. Nonsense not much to say, directly on the code, with detailed comments

Below for you to share an article on the numpy axis and dimension of understanding, has a good reference value, hope to help you. Come and see it together. NumPy ' s main object is the homogeneous multidimensional array. It is a table of elements

This article mainly for you in detail the Python shopping cart program simple code, with a certain reference value, interested in small partners can refer to The example of this article for you to share the Python shopping cart program specific