Introduction to Python

Here is python introduction

What is Python?

• Python is the one of the most popular general-purpose programming languages.

• It is a multi-paradigm programming language.

• Applications include -but not limited to- web development, software development, data analysis, automated tasks…

• It has a magnificent ecosystem of libraries and frameworks.

How to interact with python

• Python is essentially a command-line interpreter in its core.

1- Python Interpreter

2- Running a Python Script from the Terminal

• Python scripts have the extension .py

3- Using a development environment

• Some of them are PyCharm, VSCode, RStudio and so on.

• Usually Shift + Enter or Ctrl + Enter to send the command to shell

4- Jupyter Notebook

• Browser environment for writing and running interactive Python code.

• You can combine text and code cells to create a notebook.

Keyboard Shortcut	Description
Shift + Enter	Send the cell to the kernel for execution
Ctrl + Enter	Run the cell and advance to the next cell
Enter	Edit the cell
Esc	Stop Editing the cell
H	Help
M	Cell to Markdown (text)
Y	Cell to code

:::

Hello World!

• To print things in the console, one should use print() function.
• Let’s go ahead and print Hello World:

print("Hello World!")

Hello World!