A list comprehension is using the same name as another variable defined in the module. Either change the variable name in the list comprehension or change it in the module.
In this example, the variable
i is defined as 1 then reused in the list comprehension.
i = 1 squares = [i ** 2 for i in range(10)]
i = 1 squares = [num ** 2 for num in range(10)]