Python

　　　　　　　　　　　　　　　　　　Lesson two: Getting Started with deep learningLecturer: David (data analysis engineer)This course mainly introduces the basic principles of many neural networks, very very basic understanding.0, Mind map preview:One, deep neural

The Selenium control browser needs to download the corresponding version of the driver and unzip the downloaded driver and then copy it to the Python installation directory.1. ChromeDrive the corresponding version and; https://npm.taobao.org/mirrors/

basic knowledge A Python identifierIn Python, identifiers are made up of letters, numbers, and underscores.In Python, all identifiers can include English, numeric, and underscore (_), but cannot begin with a number.Identifiers in Python are

This Python module can be used to assume a lump of MD as a website. Reference: http://www.mkdocs.org/Installation configurationpip install mkdocsmkdocs new my-projectcd my-project只需要将一坨md丢到相应的目录启动服务即可.mkdocs serveAccess effectCan also diy his theme

[Process () forItem1inchIterable1ifCondition1 forItem2inchIterable2ifCondition2 for Item3inchIterable3ifCondition3] equivalent to: Res= [] forItem1inchIterable1:ifCondition1: forItem2inchIterable2:ifCondition2: forItem3inchIterable3:ifCondition3:res.

1, add2, using the Extend method of the list, L1.extend (L2), the method adds all the elements of the parameter L2 to the tail of the L1, for example:3, with sectioning (Slice) operation, L1[len (L1): Len (L1)] = L2 and the above method

　　In order to better illustrate the next file modification operation, we need to learn the common methods of file operation.I. Common methods in file processing#! /usr/bin/env Python3#-*-coding:utf-8-*-#Write by Congcong#Flush () forces the file to

********************OS module:Os.remove () deleting filesOs.unlink () deleting filesOs.rename () Renaming filesOs.listdir () lists all files in the specified directoryOs.chdir () Change the current working directoryOS.GETCWD () Gets the current file

strings, lists, tuples, dictionaries, collections, generators these data types that can be traversed through a for loop are iterative objectsIsinstance can be used to determine whether an object can be iterated>>> from Collections Import iterable>>>

　Learning Python, the conversion between character encodings is a stumbling block, not to fully understand the code, one day it will be caught in the pit you.python2.x and python3.x in the character encoding settings also have a very big difference (

Preparatory work python3.5 or above, currently installed as Anaconda Qt5.9, installation process see previous article PyQt5.6, updated via Anaconda Sample program: CRC check Create an interface Through QT Designer

Introduction of Fortress MachineMany people think that the fortress machine is a springboard machine, which is not comprehensive. The springboard function is only one of the features that the fortress machine has. The fortress machine also has the

Reflection is the State, property, method by which the program runs through a string mapping or modificationThere are 4 ways of doing this:Hasattr ():Hasattr (object,string): Object instantiated As StringA method or property that determines whether

# pip Install OPENPYXL# OPENPYXL can only be used to process xlsx and cannot be used to process XLSFrom OPENPYXL import Load_workbook# Open FileExcelfullname = ' c://Platform Software Development Department Payroll statement (2017-6). xlsx 'WB =

Introduction to defaultdict and _ missing _ () in Python, Preface Today, our main character is defaultdict. We will also introduce the imitation method.__missing__()This article is mainly from the user's blog and shared with people in need. I won't

Detailed description of Signal code in Django and djangosignal This article focuses on the relevant content of signal in Django development. The details are as follows.Preface In web development, you may encounter the following scenarios: After a

Python basics and python SummaryWhen I first learned Python, I learned and summarized it in the form of a mind map, which is suitable for review. For details, refer to "Python: Getting started to practice. Here is a summary of the

Python + matplotlib implements the gorgeous text box DEMO code, pythonmatplotlibGorgeous text box demonstration First, let's take a look at the demo results: Implementation Code Import matplotlib. pyplot as pltplt. text (0.8, 0.5, "python",

Python Tkinter implements the simple calculator function, pythontkinter In my spare time, I wrote a simple calculator using tkinter to implement simple addition, subtraction, multiplication, division operations. I used two buttons and entrycontrols.

[Python-dictionary usage] Three methods for creating a dictionary: python3   # Create an empty dictionary empty_dict = dict () print (empty_dict) # Use ** kwargs variable parameters to input keywords to create a dictionary a = dict (one = 1, two = 2,