Class 12 Computer Science — Chapter 1: Exception Handling in Python

What you'll learn

• ▸Syntax Errors vs. Exceptions
• ▸Built-in Exceptions
• ▸Raising Exceptions with the `raise` Statement
• ▸The `assert` Statement
• ▸Handling Exceptions with `try-except` Block
• ▸Handling Specific Exceptions
• ▸The `finally` Clause

Chapter Summary

--- PAGE 1 --- Chapter 1 Exception Handling in Python 12130CH01 "I like my code to be elegant and efficient. The logic should be straightforward to make it hard for bugs to hide, the dependencies minimal to ease maintenance, error handling complete according to an articulated strategy, and performance close to optimal so as not to tempt people to make the code messy with unprincipled optimization. Clean code does one thing well." — Bjarne Stroustrup In this Chapter » Introduction » Syntax Errors » Exceptions » Built-in Exceptions » Raising Exceptions » Handling Exceptions » Finally Clause 1.1 INTRODUCTION Sometimes while executing a Python program, the program does not execute at all or the program executes but generates unexpected output or behaves abnormally. These occur when there are syntax errors, runtime errors or logical errors in the code. In Python, exceptions are errors that get triggered automatically. However, exceptions can be forcefully triggered and handled through…

Practice Questions from this Chapter

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1. Explain computer errors simply. Get Solution →
2. Give a real-world example of a software glitch. Get Solution →
3. Show famous computer bugs. Get Solution →
4. What is another name for syntax errors, as mentioned in the chapter? Get Solution →
5. According to the text, what happens when the Python interpreter finds a syntax error? Get Solution →
6. How does the chapter define an exception in Python? Get Solution →
7. Which built-in exception is raised when the denominator in a division operation is zero? Get Solution →
8. Which built-in exception is raised when you try to use a variable that has not been defined? Get Solution →

Did you know?

• 💡 The very first "computer bug" was a real moth stuck in a machine in 1947.
• 💡 Many important rockets have crashed due to tiny software errors or "exceptions."
• 💡 Some computer errors are named after Greek myths, like "Trojan horse" viruses.
• 💡 Ancient mathematicians struggled with "division by zero" for thousands of years.
• 💡 Programmers spend more time finding and fixing errors than writing new code.

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