Exception Handling in Python — Syllabus
Assam Board · Class 12 · Computer Science
What Exception Handling in Python covers in Assam Board Class 12 Computer Science: 4 topics, for the 2026-27 session.
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Topics in Exception Handling in Python
1. Core Ideas
- Syntax errors are also known as parsing errors.
- The interpreter does not execute a program with a syntax error until it is rectified, saved, and rerun.
- An exception is raised when an error occurs during execution of a program.
2. Built-in Exceptions
- SyntaxError is raised when there is an error in the syntax of the Python code.
- ValueError is raised when a built-in method or operation receives an argument that has the right data type but mismatched or inappropriate values.
- IOError is raised when the file specified in a program statement cannot be opened.
3. Raising Exceptions
- Programmers can forcefully raise exceptions using the raise and assert statements.
- Once an exception is raised, no further statement in the current block of code is executed.
- The raise statement is used to throw an exception.
4. Handling Exceptions
- Exceptions are caught in the try block and handled in the except block.
- Every try block is followed by an except block.
- While executing the program, if an exception is encountered, further execution of the code inside the try block is stopped and the control is transferred to the except block.
Key Concepts
Central concept: Exception Handling in Python
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