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Errors & debugging

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

53 matches

Retry an Operation on ConnectionError in Python

Retries an unreliable operation a fixed number of times when it raises a transient ConnectionError, with a small delay between attempts.

retry connection-error error-handling

Python

import time
import random


def unreliable_operation():
    """Simulates an operation that throws ConnectionError occasionally."""
    if random.random() < 0.6:
        raise ConnectionError("Transient network failure")
    return "Operation succeeded"


def retry_operation(attempts=4, delay=0.2):
    """Retries the o…

15 0 Open

Errors & debugging easy

Split try except ValueError handler for beginners in Python

Demonstrates how to handle ValueError and ZeroDivisionError separately using try/except blocks, with beginner-friendly examples for parsing and division.

try-except valueerror zerodivisionerror

Python

def parse_number(text):
    try:
        number = int(text)
        return f"Parsed successfully: {number}"
    except ValueError as error:
        return f"Conversion failed: {error}"

def divide_numbers(dividend, divisor):
    try:
        result = dividend / divisor
        return f"Division result: {result}"
    e…

14 0 Open

Errors & debugging easy

Try Except ValueError in Python: Handle Conversion Errors

Catch ValueError exceptions when converting strings to integers or performing arithmetic, returning None on failure instead of crashing.

try-except valueerror exception

Python

def convert_to_int(value):
    try:
        return int(value)
    except ValueError as error:
        print(f"Conversion failed: {error}")
        print(f"Problem value was: {repr(value)}")
        return None


def divide_numbers(numerator, denominator):
    try:
        result = numerator / denominator
        retur…

14 0 Open

Errors & debugging easy

Use pprint for Nested Structure Debug Output in Python

Pretty-print nested dictionaries and lists with pprint for readable, organized debug output.

pprint debugging nested-structure

Python

from pprint import pprint

def build_nested_structure():
    """Create a sample nested data structure for demonstration."""
    return {
        "project": "DataPipeline",
        "config": {
            "inputs": ["raw_1.json", "raw_2.json"],
            "processing": {
                "steps": ["clean", "transform",…

15 0 Open

Errors & debugging easy

Validate try except ValueError handler for beginners — errors debugging

Learn how to validate user input and handle division errors safely using try/except with ValueError and ZeroDivisionError in Python.

try except valueerror

Python

def divide_numbers(a, b):
    """Divide two numbers, catching division by zero and value errors."""
    try:
        result = a / b
    except ZeroDivisionError:
        print("Error: Cannot divide by zero!")
        return None
    except TypeError:
        print("Error: Both arguments must be numbers!")
        retu…

14 0 Open

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