2.15 – Practice Problems | Even–Odd Excluding Zero | Python Programming – New Series

Welcome to the Python Programming – Complete Course (New Series) by Burle Sharma.

In this class (2.15), we begin focused practice on selection statements to strengthen and polish the concepts we have learned so far.

Till now, we have completed:

✔ simple if
✔ if…else
✔ if…elif
✔ nested if

Now, the most important step is applying these concepts to real problems.

In this video, we solve a number-based problem by writing:

• Expected Output
• Complete Program
• Program Execution

(⚠️ Dry run is intentionally not performed here and will be explained only on student request.)

📘 Problem Solved in This Video

Write a program to accept a number and:

• Check whether the number is even or odd
• Exclude zero from checking
• If the user inputs 0, display:
“You are not allowed to input zero.”

The same problem is solved in multiple logical ways, including:

✔ Using if…elif
✔ Using nested if

This clearly shows that a single problem can have multiple valid solutions, depending on logic design.

🎓 What you’ll learn in this video

• Applying selection statements to number-based problems
• Handling special cases like zero
• Writing expected output before coding
• Solving the same problem using different conditional structures
• Understanding when to use if…elif vs nested if
• Writing clean, exam-oriented Python programs
• Developing confidence in logic building
• Preparing for 1-mark, 2-mark, and 5-mark exam questions

🧠 Key Learning Point

Programming is not about memorizing syntax, it is about choosing the right logic based on the question.

This class teaches you that:

• One problem can be solved in many ways
• Correct logic matters more than the number of lines
• Selection statements become powerful only through practice

Solving more problems is the key to mastering if-conditions.

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