What are common mistakes people make with generator expressions?
An example of an AI chatbot conversation about common mistakes with generator expressions.
What are common mistakes people make with generator expressions?
One common mistake is not understanding that generator expressions return an iterator, not a list.
Can you give an example of that?
Sure! If you write gen = (x*x for x in range(5)), gen is an iterator. You need to convert it to a list to see the values.
What happens if I try to iterate over it twice?
If you iterate over it twice, you'll get an empty result the second time because the iterator is exhausted after the first iteration.
How can I avoid this issue?
You can convert the generator to a list using list(gen) if you need to iterate multiple times.
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