Years into writing Python and mutable defaults still bite me occasionally.

Pybites walks through why passing a list to a function and modifying it in-place changes the original. Python passes by reference, so your local variable is just another name tag on the same object. The article covers mutable default arguments too, which is the classic "function remembers values between calls" trap.

If you have ever been confused by a list changing when you did not expect it, read this.

Check it out here: https://amplt.de/DishonestSereneOpposite
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