Web Reference: AttributeError: 'list' object has no attribute 'cost' this will occur when you try to call .cost on a list object. Pretty straightforward, but we can figure out what happened by looking at where you call .cost -- in this line: Jul 23, 2025 · In this article, we are going to understand the AttributeError: Object has no attribute error and then discuss the ways we can resolve this error. Generally, it is good practice to read and understand the error messages we encounter when writing our programs. Dec 9, 2025 · Learn how to resolve the Python AttributeError 'list' object has no attribute 'items' by understanding data types and using correct dictionary methods.
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