Ranges and List Comprehensions

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What does the following code return? list(range(5))	`[0, 1, 2, 3, 4]` is returned. The `range()` function creates collections that can converted to lists or used with `for` loops.
What does the following code return? list(range(3, 7))	`[3, 4, 5, 6]` is returned. The `range()` function can be supplied two arguments to indicate when the range should start and when it should end.
What does the following code return? type(range(100))	`<class 'range'>` is returned. The `range()` function creates range objects that make it easy to work with sequences of numbers.
What does the following code return? list(range(100, 300, 50))	`[100, 150, 200, 250]` is returned. The `range()` function can take an optional third argument to specify the difference between each number in the sequence (referred to as the "step").
What does the following code return? list(range(10, 0, -2))	`[10, 8, 6, 4, 2]` is printed. Descending ranges can also be constructed.
What does the following code print? r = [x ** 2 for x in range(5)] print(r)	`[0, 1, 4, 9, 16]` is printed. This code squares all the numbers in `range(5)`. This code is an example of a list comprehension. List comprehensions are elegant ways to create lists from other lists.
What does the following code print? r = [2 ** i for i in range(5)] print(r)	`[1, 2, 4, 8, 16]` is printed. This code raises 2 to all the numbers in `range(5)`. This is another example that uses the list comprehension syntax.
What does the following code print? r = [x for x in range(10) if x % 2 == 0] print(r)	`[0, 2, 4, 6, 8]` is printed. This example uses a list comprehension to make a list with all the even numbers in `range(10)`. `if` statements can be used with list comprehensions.
What does the following code print? r = [(x, y) for x in range(2) for y in range(2)] print(r)	`[(0, 0), (0, 1), (1, 0), (1, 1)]` is printed. This example uses a list comprehension to create a list of tuples.