Python Shell is an interactive environment where you can write and execute Python code immediately.

It is one of the easiest ways to learn Python because you can see the result as soon as you run a command.

Python Shell is useful for beginners to practise Python syntax and test small programs.

Python Shell is useful for:

• Learning Python.
• Testing small programs.
• Trying simple examples.
• Practising Python syntax.
• Performing quick calculations.

Python Shell works using the REPL model.

REPL stands for:

• R - Read
• E - Evaluate
• P - Print
• L - Loop

Python repeats this process every time you enter a command.

Whenever you enter a Python statement, the following steps are performed:

1. Python reads the statement.
2. Python evaluates (executes) it.
3. Python prints the result.
4. Python waits for the next statement.

This process continues until you exit the Python Shell.

You can start Python Shell in two ways.

Method 1: Using Start Menu

1. Open the Start Menu.
2. Search for Python IDLE.
3. Open Python IDLE (Shell).

Method 2: Using Command Prompt

Open Command Prompt and type:

Python 3.x.x
>>>

You can also start Python Shell using:

Python 3.x.x
>>>

Python Shell is best for:

• Testing one or two lines of code.
• Checking Python syntax.
• Performing quick calculations.
• Learning Python step by step.
• Verifying small code examples.

Python Shell is not suitable for:

• Large programs.
• Projects.
• Programs with many lines of code.

For complete programs, write the code in a .py file.

To close the Python Shell, type:

Python Shell closes and you return to the Command Prompt.

You can also use:

Python Shell closes.

• Python Shell is an interactive environment.
• It works using the REPL model.
• REPL stands for Read, Evaluate, Print, and Loop.
• Python Shell is useful for learning and testing small programs.
• Use a .py file for larger programs.
• Use exit() or quit() to close the Python Shell.

Topic	Description
Python Shell	Interactive environment to run Python commands.
REPL	Read, Evaluate, Print, Loop.
Python Prompt	>>>
Best For	Learning, testing, and small programs.
Exit Commands	exit() or quit()