1, Understanding PyPI
It can be understood that it is a package management platform. All packages we commonly use will be hosted on this platform. Through pip install xx, we will find this package in PyPI and download it to our computer.
2, Process analysis
For module developers, there are essentially three things to do:
Open the refrig ...
Posted by 5kyy8lu3 on Tue, 08 Feb 2022 06:32:56 +0100
What is stream processing
If you have Java experience, you will be full of praise for java8 Stream, which greatly improves your ability to process collection type data.
int sum = widgets.stream()
.filter(w -> w.getColor() == RED)
.mapToInt(w -> w.getWeight())
Stream enables u ...
Posted by yandoo on Tue, 04 Jan 2022 11:01:16 +0100
Python Tool Library Installation xlwt and xlrd Installation under 1.1win7
1.1.1 Method 1: Download and Install
1. From http://pypi.python.org/pypi/xlwt Download xlwt-1.0.0.tar.gz;
2. From http://pypi.python.org/pypi/xlrd Download xlrd-0.9.4.tar.gz;
3. Unzip the package;
4. Run under win7.
[plain] view plain copy
Posted by SystemOverload on Thu, 02 Jul 2020 17:02:27 +0200
This is an original article by Chen Gang, a Suning network architect.
01 prepare the tester
The 16G laptop didn't run, so it simply put together a game studio level machine: dual E5-2860v3 CPU, 24 core 48 threads, 128G DDR4 ECC memory, NVME disk 512G. Open 5 VM S on it and pretend to be physical serve ...
Posted by prasanthmj on Fri, 19 Jun 2020 04:27:47 +0200
This is a basic article about image and container, although some of it is related to the article written in 18 years Enter the door of Docker and Kubernetes container world There are overlaps, but with my familiarity with containers in recent years, I would like to share some of my knowledge and serve as a technical foreshadowing for my ...
Posted by jchemie on Sat, 13 Jun 2020 09:16:31 +0200
Python crawler example: News total crawling
Web page parsing
Stock data source
Some time ago, due to the needs of tasks, it was necessary to climb the number of news of Shanghai Stock Exchange 50 index component stocks on certain da ...
Posted by HavokDelta6 on Thu, 11 Jun 2020 07:10:42 +0200
Flask itself is equivalent to a kernel. Almost all other functions need to be extended, which needs to be implemented by third-party extensions. For example, you can use flask extensions to add ORM, form verification tools, file upload, authentication, etc. There is no default database for flask. You ...
Posted by Muggin on Thu, 11 Jun 2020 06:29:20 +0200
1 create project
Install the required environment python version needs > = 3.6
pip install asyncpy
After the installation is complete, you can start creating a crawler project.
Create project command:
asyncpy genspider demo
Create a project called demo.
After the creation is successful, open the project file. The projec ...
Posted by xnor82 on Thu, 11 Jun 2020 05:39:52 +0200
python-docx operates on word and inserts the picture in the specified position.
Install Python docx
Connect the word document to be operated on
Paragraph positioning (text positioning)
Posted by markjia on Wed, 10 Jun 2020 08:13:16 +0200
CentOS7.2 build ctfd shooting range platform
First, there is a 2-core 4G memory 30G disk with no interface in CentOS 7.2
Then network bridging mode
Configure the yum source of CentOS7 to be Alibaba's
1. Install git
yum provides git
yum -y install git
2. Install pip (with pi ...
Posted by svanderclock on Tue, 09 Jun 2020 08:32:52 +0200