Python Interactive Mode vs Script Mode

Introduction

Python has two ways to run code: one lets you try things quickly, the other runs whole programs. Knowing the difference helps you choose the best way to work.

You want to test a small piece of code quickly without saving a file.

You are learning Python and want to see immediate results from commands.

You have a complete program saved in a file and want to run it all at once.

You want to automate tasks by running a saved Python script.

You want to debug or experiment with code step-by-step.

Syntax

Python

Interactive Mode:
  Run python in terminal without a file.
  Type commands one by one.

Script Mode:
  Save code in a file with .py extension.
  Run with: python filename.py

Interactive mode shows a prompt (usually >>>) where you type commands.

Script mode runs the whole file from top to bottom.

Examples

In interactive mode, you type print and see the output immediately.

Python

>>> print('Hello')
Hello

In script mode, save code in a file and run it to see output.

Python

# Save this in hello.py
print('Hello from script')

Run the script file in terminal to see the output.

Python

python hello.py
Hello from script

Sample Program

This script asks for your name and then greets you. You run it in script mode.

Python

# This is a script file example
name = input('Enter your name: ')
print(f'Hello, {name}!')

Important Notes

Interactive mode is great for quick tests and learning.

Script mode is better for saving and running full programs.

You can switch between modes anytime depending on your task.

Summary

Interactive mode lets you run Python commands one at a time and see results immediately.

Script mode runs a saved file with many lines of code all at once.

Use interactive mode to experiment and script mode to run complete programs.