Programmer Think

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 ...

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()) .sum(); Stream enables u ...

I. Preparations 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 cmd ...

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 ...

preface 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 ...

Python crawler example: News total crawling preface analysis Web page parsing Stock data source Proxy IP code implementation summary preface 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 ...

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 ...

1 create project Install the required environment python version needs > = 3.6 Installation command: 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 ...

python-docx operates on word and inserts the picture in the specified position. introduce Install Python docx Import package Connect the word document to be operated on Add text Add picture Add table run object location Table positioning Paragraph positioning (text positioning) Complete code ...

CentOS7.2 build ctfd shooting range platform reference resources 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 ...