Python Coding Challenge - Question with Answer (ID -180226)

 

Explanation:

Creating the List

nums = [-2, -1, 0, 1, 2]

A list named nums is created.

It contains negative numbers, zero, and positive numbers.

Using filter() with lambda

filter(lambda x: x, nums)

filter() keeps only those elements for which the function returns True.

lambda x: x means:

Return the value of x itself.

In Python:

0 is treated as False

Any non-zero number is treated as True

👉 So this line filters out 0 and keeps all other numbers.

Converting to a List

list(filter(lambda x: x, nums))

filter() returns a filter object, not a list.

list() converts the result into a readable list.

Printing the Result

print(list(filter(lambda x: x, nums)))

Prints the filtered list.

✅ Final Output

[-2, -1, 1, 2]

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