User Defined Functions (Videos on YouTube)

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The recommendation is that you view the videos listed below in sequence

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1. Why we have Python functions >>
2  Python User Defined Function >>
3. How to design a Python function >>
4. Python Function with arguments and no return value >>
5. Python Function with no arguments but return value >>
6. Python Function with no arguments and no return value >>
7. Python Keyword Arguments for functions >>
8. Python Default Arguments for functions >>
9. Local and Global Variable Scope >>
10. Lifetime of Variables >>
11. In functions do not directly access global variable >>
12. Python Parameter Passing Mechanism >>