NotImplemented — Easy Examples

Returned by special methods to indicate an operation is not supported

EasyIntermediateAdvancedExpert

Triggering NotImplemented

How NotImplemented is raised and how to catch it.

python
# Triggering and catching NotImplemented
try:
    raise NotImplemented("example error")
except NotImplemented as e:
    print(f"Caught NotImplemented: {e}")
    print(f"Type: {type(e).__name__}")

NotImplemented is raised when returned by special methods to indicate an operation is not supported. Always catch specific exceptions rather than bare except clauses.

Handling NotImplemented

Basic error handling pattern for NotImplemented.

python
# Safe handling pattern
def safe_operation():
    try:
        raise NotImplemented("example error")
    except NotImplemented:
        print("Operation failed gracefully")
        return None

result = safe_operation()
print(f"Result: {result}")

Wrapping risky operations in try/except blocks prevents your program from crashing.

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