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2025-01-17 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >
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Editor to share with you how much does the website construction cost? I believe that most people do not know much about it, so share this article for your reference. I hope you will learn a lot after reading this article. Let's learn about it together.
Check whether the sequence is empty
Lists, tuples, and so on work only if the sequence is not empty, so you need to check whether the sequence is empty before the operation.
> empty_list = [(),'', [], {}, set ()] > for item in empty_list:. If not item:... Print (f'Do something with the {type (item)}'). Do something with the
To do this, you can use the not keyword to negate a sequence (for example, not []), whose value is True as long as the sequence is not empty. In addition, you can do the same for two other common data types, dict and set.
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