文章目录一、环境准备二、hello Linux三、运行shell脚本四、shell变量1）普通变量2）只读变量3）删除变量五、Shell 字符串1）单双引号2）字符串拼接3）获取字符串长度4）字符串提取六、Shell 数组1）读取索引数组2）获取数组中的所有元素3）获取数组的长度七、shell运算符八、Shell echo命令1)显示普通字符串2）显示转义字符3）显示换行4）显示不换行5）显示结果重定向至文件6）显示执行时间九、Shell test 命令1）数值测试2）字符串测试3）文件测试十、shell

Conceitos básicos e dicas importantes!

Exemplificando orientação a objeto com o dataset de Titanic

Build a simple model to simulate the impact of several replenishment rules (Basic, EOQ) on the inventory costs and lost sales

While Scikit-Learn offers two functions for implementing Hyperparameters Tuning with k-fold Cross Validations: GridSearchCV and…

End to end text data pre-processing

Apresentação do programa e das bases de dados

The LAMP web development stack doesn’t mean anything anymore. It’s time to come up with a better name.

Primeiro contato com a linguagem pelos 3 cursos do professor Gustavo Guanabara

In this tutorial, you'll explore some of the coolest and most useful features in Python 3.10. You'll appreciate more user-friendly error messages, learn about how you can handle complicated data structures with structural pattern matching, and explore new…

The official home of the Python Programming Language

Python 3.10 is set to be released on 4 October 2021. Join us live in our Python 3.10 Release Stream with Pablo Galindo, CPython Core Developer and Python 3.10 Release Manager, and Leon Sandøy.


Links:
- https://docs.python.org/3.10/whatsnew/3.10.html
- …

Python 3.13 is out—when should you switch to using it?

<a href="https://pypi.org/project/coverage/6.0/" rel="external noopener">Coverage.py 6.0 is now available</a>. It’s a major version bump for two reasons:

Assuming I want to write a function that accepts any type of number in Python, I can annotate it as follows:
from numbers import Number

def foo(bar: Number):
print(bar)

Taking this concept on...

If you didn't know, code golf is a game/challenge to solve a problem in the least number of keystrokes. That's fine and all, but it feels like...

Have you wanted to create a Python application that goes further than a command-line interface? You would like it to have a friendly interface but don't want to make a GUI (Graphical User Interface) or web application. Maybe a TUI (Text User Interface)would…

How to work with multiple queues in Celery, why you need it and how to set it up. Tutorial includes file processing and DNS lookups for domains of email addresses. Also, docker-compose.yml is covered for local development.