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Errors & debugging

Handle failures gracefully, raise helpful errors, and debug with confidence.

3 matches

How to Handle ValueError and Multiple Exceptions in Python

This code demonstrates try/except blocks for beginners, handling ZeroDivisionError, TypeError, and ValueError with two practical functions: dividing numbers and parsing strings to floats.

try-except valueerror exception-handling

Python

def divide_numbers(a, b):
    """Divide two numbers with error handling for beginners."""
    try:
        result = a / b
        print(f"{a} / {b} = {result}")
        return result
    except ZeroDivisionError:
        print(f"Error: Cannot divide {a} by zero!")
    except TypeError:
        print(f"Error: Both argu…

14 0 Open

Errors & debugging easy

How to Use try except ValueError in Python to Parse Numbers

Convert strings to integers safely with try/except ValueError and TypeError, returning a value-or-error tuple.

try-except valueerror error-handling

Python

def parse_number(text):
    """Safely convert a string to an integer, handling errors gracefully."""
    try:
        value = int(text)
        return value, None
    except ValueError as error:
        return None, f"Conversion failed: {error}"
    except TypeError as error:
        return None, f"Wrong type provided…

13 0 Open

Errors & debugging medium

Redact secrets from log message formatter in Python

Build a custom logging.Formatter that masks passwords, API keys, and credit card numbers in log output.

logging redaction security

Python

import re
import logging

class RedactingFormatter(logging.Formatter):
    """Formatter that masks sensitive data in log messages."""
    
    SENSITIVE_PATTERNS = [
        (re.compile(r'password[=:]\s*\S+', re.IGNORECASE), 'password=[REDACTED]'),
        (re.compile(r'api[_-]?key[=:]\s*\S+', re.IGNORECASE), 'api_key…

14 0 Open

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