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How to Detect Hardcoded Secrets in Python Source Code

A Python utility that scans source code for common hardcoded secrets like API keys, passwords, tokens, and AWS credentials using regex patterns.

secrets regex security

Python

import re

def detect_secrets(text):
    """Detect potential hardcoded secrets in source code."""
    patterns = {
        'api_key': r'(?i)(api[_-]?key|apikey)\s*[=:]\s*["\']([^"\']+)["\']',
        'password': r'(?i)(password|passwd)\s*[=:]\s*["\']([^"\']+)["\']',
        'token': r'(?i)(\b(token|secret)\b)\s*[=:]\s…

43 0 Open

Algorithms & data structures easy

Sort list by multiple keys with tuple ordering in Python

Sort a list of dictionaries by multiple criteria — surname, age, then score descending — using a tuple key and negation.

sorting tuples lambda

Python

def sort_multi_key(data):
    # Sorts by surname, then age, then score descending
    return sorted(
        data,
        key=lambda person: (
            person['surname'].lower(),
            person['age'],
            -person['score']  # negative to reverse sort by score
        )
    )


if __name__ == "__main__"…

14 0 Open

Algorithms & data structures easy

Stable sort preserving equal order demo in Python

Demonstrates Python's stable sort, showing that elements with equal sort keys retain their original relative order.

sorting stable sort timsort

Python

from operator import itemgetter

def stable_sort_demo():
    data = [(3, "first"), (1, "second"), (3, "third"), (1, "fourth"), (2, "fifth")]
    print("Original:", data)
    
    # Sort by first element (the tuple's first value), keeping relative order of equal items
    sorted_data = sorted(data, key=itemgetter(0))
 …

13 0 Open

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