Dictionary public method
Think about it:
If there is a list
nameList = ['xiaoZhang', 'xiaoWang', 'xiaoLi'];
You need to write the name "xiaoWang" wrong. Modify it by code:
nameList = 'xiaoxiaoWang'
If the order of the list changes, as follows
nameList = ['xiaoW ...
Posted by thepreacher on Sun, 23 Feb 2020 10:01:49 +0100
Image Processing Basis
1. Software Installation
In the computer vision course, image processing is done in the python environment, so you need to select the software that can edit the python statement. The visual interface of PyCharm is selected here. In addition, there are editors such as VScode,Su ...
Posted by wildcolour on Sun, 23 Feb 2020 04:13:37 +0100
1, Create classes and objects
Object-oriented programming is a kind of programming method. The landing of this programming method needs to use "class" and "object". Therefore, object-oriented programming is actually the use of "class" and "object".
Class is a te ...
Posted by mattonline on Sat, 22 Feb 2020 12:45:55 +0100
The Go function does not support nesting, overloading, and default parameters
The following features are supported:
No prototype required, variable length parameters, multiple return values, named return value parameters, anonymous functions, closures
The definition function uses the keyword func and the left curly brace c ...
Posted by Japet on Fri, 21 Feb 2020 17:09:02 +0100
Pay attention to the official account number: CoderBuff, reply to "redis" and get the complete version of Redis5.x tutorial PDF.
Redis5.x tutorial directory
Chapter I preparation
Chapter II data types
Chapter III orders
Chapter IV configuration
Chapter 5 Java client (I)
Chapter VI affairs
Chapter 7 distributed lock
Chapter 8 Java cli ...
Posted by manx on Fri, 21 Feb 2020 08:27:39 +0100
1, Demand analysis
To climb the 24-hour hot list of novels on the start of Chinanet: https://www.qidian.com/rank/hotsales?style=1
As the first crawler, we only crawl the first page of each novel's name, author, type, and whether it is serialized.
2, Create project
Open the command line, switch to th ...
Posted by msing on Thu, 20 Feb 2020 07:20:41 +0100
How to get object (tag) name, attribute, content, comment and other operations by using the Python crawler beautifulsop
1, Tag object
1. The tag object is the same as the tag in the XML or HTML native document.
from bs4 import BeautifulSoup
soup = BeautifulSoup('<b class="boldest">Extremely bold&l ...
Posted by etoast on Wed, 19 Feb 2020 17:41:47 +0100
Common Python packages
pip install matplotlib-i http://pypi.douban.com/simple/ --trusted-host pypi.douban.com
If you fail, try this:
Update pip first and install matplotlib
python -m pip ins ...
Posted by swimmerphil1 on Wed, 19 Feb 2020 16:04:51 +0100
HANS123 strategy was first used in the foreign exchange market. Its trading mode is relatively simple and belongs to the trend breakthrough system. This trading mode can enter the market at the first time when the trend is formed, so it is favored by many traders. So far, HANS123 has expanded many versions. Today, we will understand HA ...
Posted by Stille on Wed, 19 Feb 2020 11:06:08 +0100
There are many different Web frameworks under Python. The common ones are Django, Flask,Torand,. Django is the most representative of the heavyweight players. Many successful websites and apps are based on Django. Django adopts the framework mode of MVC, namely model M, view V and controller C.
1, P ...
Posted by Kookedoh on Tue, 18 Feb 2020 12:59:24 +0100