Python Scopes Explained: Understanding the LEGB Rule: Part 1 (نطاقات البايثون) #11
What happens when you use a name in Python? In this video, we introduce the concept of "Scopes" and the famous LEGB rule (Local, Enclosing, Global, Built-in). We specifically focus on the Built-in Scope—the home of Python's pre-defined functions like print() and max()—and explain how Python searches through these layers to find your variables.
What you will learn:
✅ The four types of Python Scopes: Local, Enclosing, Global, and Built-in.
✅ What is the Built-in Scope? (ما هو الـ Built-in Scope).
✅ Why you don't need to import functions like print() or len().
✅ Understanding the search order: How Python looks for names.
✅ Why you should avoid using built-in names for your own variables.
✅ Handling naming conflicts and shadowing built-in functions.
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📍 Video Timeline:
00:00 - Channel Intro | مقدمة القناة
00:14 - Introduction to Python Scopes (مقدمة عن الـ Scopes في بايثون)
00:21 - The 4 Scopes: Local, Enclosing, Global, and Built-in (شرح الأنواع الأربعة)
00:35 - Defining a Scope: What is a Region in code? (تعريف النطاق البرمجي)
01:20 - Focus: Deep dive into the Built-in Scope (Built-in Scope نظرة عميقة على الـ Built-in Scope)
01:50 - Why built-in functions like print() are always available
02:30 - Examples of Built-in objects: Keywords vs. Functions
03:30 - The Search Process: How Python finds the print function
04:00 - CRITICAL: Why you shouldn't reuse built-in names (تجنب تسمية المتغيرات بأسماء جاهزة)
04:30 - What happens if you shadow a built-in function? (تأثير تضارب الأسماء)
05:00 - Wrap-up & Preview of Local and Global scopes (خاتمة وتمهيد للدرس القادم)
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