TypeError — Expert Playground

Raised when an operation is applied to an object of inappropriate type

Python Playground

# Exception groups (Python 3.11+)
import sys
print(f"Python {sys.version}")

# Exception hierarchy inspection
print(f"TypeError MRO:")
for cls in TypeError.__mro__:
    print(f"  {cls.__name__}")

# Exception attributes
try:
    len(42)
except TypeError as e:
    print(f"\nException attributes:")
    print(f"  args: {e.args}")
    print(f"  __traceback__: {type(e.__traceback__)}")

    # Traceback manipulation
    import traceback
    tb_lines = traceback.format_exception(type(e), e, e.__traceback__)
    print(f"  Traceback lines: {len(tb_lines)}")

Output

Click "Run" to execute your code

Understanding the exception hierarchy and traceback system helps build robust error handling and debugging tools.

Challenge

Try modifying the code above to explore different behaviors. Can you extend the example to handle a new use case?

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