INFO L04 (w02-2) - Expressions and command-line Arguments

If trying to import a command-line argument when none was entered ("something = sys.argv[1]"), the error produced will be:

If trying to import a command-line argument when "import sys" hasn't been entered, the error produced will be:

When running “python3 working.py 12.8”, sys.argv[1] is which of the following?

What will be the output of the following code: x = 3 y = x x = 5 print(y)

What will be the output of the following code: x = 3 y = x x = 5 print('y')