Why Your Python Functions Are Secretly Changing Data You Never Passed to Them

About this episode

The episode discusses how Python's mutable default arguments can unintentionally alter data across function calls.

This story was originally published on HackerNoon at: https://hackernoon.com/why-your-python-functions-are-secretly-changing-data-you-never-passed-to-them . Python's mutable default bug silently grows your lists across calls. Learn why it happens, how to fix it, and when it's actually intentional. Check more stories related to programming at: https://hackernoon.com/c/programming . You can also check exclusive content about #python , #python-programming , #python-tutorials , #python-debugging , #mutable-objects , #python-functions , #bugs , #hackernoon-top-story , and more. This story was written by: @sohelalam79 . Learn more about this writer by checking @sohelalam79's about page, and for more stories, please visit hackernoon.com . You defined a function with a list as a default argument. Now, it's accumulating data across calls you never connected.

Topics covered

• Python
• mutable objects
• programming bugs
• default arguments
• data handling

Keywords

• Python functions
• mutable default bug
• list accumulation
• programming
• data changes

Mentioned in this episode

Organizations: HackerNoon

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