Working With Functions – Class 12 CS Chapter 3 | Python Functions | CBSE Computer Science
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Welcome to Class 12 Computer Science – Chapter 3: Working With Functions!
In this video, we will fully understand Python functions, their structure, types, parameters, and how functions work internally — all aligned with the CBSE Class 12 syllabus and Sumita Arora Python textbook.
This chapter is extremely important for school exams and CBSE Board Exam 2025, and this video explains everything in a simple, clear, and student-friendly way.
🕒 Timestamps / Video Chapters
00:00:00 - Introduction
00:01:36 - Understanding Functions
00:02:45 - Syntax of Calling a Function
00:04:15 - Defining Functions in Python
00:08:55 - Flow of Execution in a Function Call
00:13:45 - Passing Parameters
00:18:51 - Returning Values from Functions
00:20:05 - Composition
00:22:58 - Scope of a Variable
00:37:23 - Name Resolution
00:41:02 - Variable Has Global Scope but Not Local Scope
00:43:41 - Variable Neither in Local Scope Nor in Global Scope
00:44:45 - Same Variable Exists Both Locally and Globally
00:46:45 - Assignment Without global Keyword
00:48:43 - Enclosing Scope
00:50:16 - Mutable/Immutable Properties of Passed Data Objects
00:58:05 - Immutable Objects Example
01:04:46 - Mutable Objects Example
01:10:46 - Conclusion
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