Quick Tip: Python Error Handling

Quick Tip

Python error handling:

# Try/except/finally
try:
    result = 10 / 0
except ZeroDivisionError as e:
    print(f"Error: {e}")
except Exception as e:
    print(f"Unexpected error: {e}")
finally:
    print("This always runs")

# Custom exceptions
class ValidationError(Exception):
    def __init__(self, message, field):
        super().__init__(message)
        self.field = field

# Raising exceptions
def validate_age(age):
    if age < 0:
        raise ValidationError("Age cannot be negative", "age")
    return age

# Context manager for exceptions
from contextlib import suppress
with suppress(FileNotFoundError):
    os.remove('nonexistent.txt')

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