#pythongotcha — Public Fediverse posts
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Important PSA For @jack !!!
`os.truncate(path, length)` truncates THE FILE, not the path string 😳 (with no warning)
Thank goodness you were in a venv!
😅
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It is often useful to make a #copy of a given list before performing operations that would mutate the elements.
When you make a shallow copy of an existing list, you create a new pointer to a new list object that points to the same old elements. (It saves memory.)
On the other hand, if you make a deep copy, then you create a completely new copy of the original list.
In other words: https://realpython.com/python-mutable-vs-immutable-types/#making-copies-of-lists
#learning #objects #python #dev #CS #DataScience #memory #dataDev