__debug__ — Intermediate Playground
True under normal execution; False when run with -O flag
Python Playground
# Exception chaining
class ApplicationError(Exception):
pass
try:
try:
raise __debug__("example error")
except __debug__ as original:
raise ApplicationError("Operation failed") from original
except ApplicationError as e:
print(f"App error: {e}")
print(f"Caused by: {e.__cause__}")
Output
Click "Run" to execute your code
Exception chaining preserves the original error context, making debugging easier.
Challenge
Try modifying the code above to explore different behaviors. Can you extend the example to handle a new use case?