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

What you'll learn

• ▸Syntax Errors vs. Exceptions
• ▸Common Built-in Exceptions
• ▸Raising Exceptions with the `raise` Statement
• ▸Interpreting the Stack Traceback
• ▸Using the `assert` Statement

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 p…

Practice Questions from this Chapter

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1. Explain Python errors simply. Get Solution →
2. Show a real-world example of exceptions. Get Solution →
3. Give tips to avoid programming bugs. Get Solution →
4. According to the text, what is another name for syntax errors? Get Solution →
5. What type of error occurs when a program tries to perform a division by zero? Get Solution →
6. What statement is used to forcefully throw an exception in a program? Get Solution →
7. What is an exception, as defined in the chapter? Get Solution →
8. Which built-in exception is raised when an index in a sequence is out of range? Get Solution →

Did you know?

• 💡 The first computer "bug" was a real moth found stuck in a relay in 1947.
• 💡 Python, the programming language, is named after the British comedy group Monty Python.
• 💡 Some software errors are called "heisenbugs" because they disappear when you try to find them.
• 💡 A single software bug once caused a NASA rocket to explode, costing millions of dollars.
• 💡 Many programming errors are simply called "typos" because they are small mistakes in typing.

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