FutureWarning — Easy Examples

Warning about behavior changes in future versions

EasyIntermediateAdvancedExpert

Triggering FutureWarning

How FutureWarning is raised and how to catch it.

python
# Triggering and catching FutureWarning
try:
    import warnings; warnings.warn("future change", FutureWarning)
except FutureWarning as e:
    print(f"Caught FutureWarning: {e}")
    print(f"Type: {type(e).__name__}")

FutureWarning is raised when warning about behavior changes in future versions. Always catch specific exceptions rather than bare except clauses.

Handling FutureWarning

Basic error handling pattern for FutureWarning.

python
# Safe handling pattern
def safe_operation():
    try:
        import warnings; warnings.warn("future change", FutureWarning)
    except FutureWarning:
        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.

Want to try these examples interactively?

Open Easy Playground
Intermediate Examples →