Python Question / Quiz; What is the output of the following Python code, and why? Comment your answers below!
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@PythonPr Answer: C. [8, 12] Solution: a and b are lists. Then there is a list comprehension that gives c. Let's analyze the list comprehension. Here is the trick to analyze list comps: 🗝️ Look for 3 things: `for`, `in`, and `if` (`if` is optional, sometimes it may not be there) +
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@PythonPr Answer: (c) The code initializes two lists, a and b. The list comprehension c = [x for x in a if x not in b] iterates through each element x in list a. The if x not in b condition checks if the current element x from list a is present in list b. If it is not present, it is
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@PythonPr 1. The square bracket operators denote list comprehension 2. The (for) loop iterates through an initialized list [a]. Then performs a list difference between a & b [a-b] through a conditional expression (if a not in b) 3. This creates a new list in memory [8, 12]
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@PythonPr Answer: C a & b are lists list comprehension in list c iterates through each element in list a and adds it list c only if it is not present in list b. Here, (8,12) are not present in list b. So list c will print [8,12]
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@PythonPr The answer is "C" because we are using a for loop to iterate over each item in the list assigned to the variable "a". Then we use the "not in" logic to check for what items in the returned "a" are not in "b" list, and those are the results returned in the new list "c".
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