5 Common Python Mistakes
Avoid these Python pitfalls and write cleaner code! In this video we explore five common mistakes that even experienced developers make and how you can avoid them.
🔹 *Mutable default arguments* – understand why lists and dictionaries as defaults can cause bugs and how to use `None` instead.
🔹 *Variable scope errors* – learn how Python treats local vs global variables and how to avoid `UnboundLocalError`.
🔹 *Lack of exception handling* – see why wrapping code in `try/except/finally` blocks matters for robust programs.
🔹 *Off‑by‑one loops* – get clear on how Python’s `range()` works so you don’t iterate too far or too short.
🔹 *Shadowing built‑ins* – stop overwriting names like `list` and `dict`; choose meaningful names instead.
Mastering these basics will save hours of debugging and help you write professional, maintainable Python code.
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