a: -1 b: -2 [a, b]: [b, a] print a is -2 print b is -1 arr: [1, 2, 3] [a, b, c]: arr print a is 1 print b is 2 print c is 3 obj: {x: 10, y: 20, z: 30} {x: a, y: b, z: c}: obj print a is 10 print b is 20 print c is 30 person: { name: "Bob" family: { brother: { addresses: [ "first" { street: "101 Deercreek Ln." city: "Moquasset NY, 10021" } ] } } } {name: a, family: {brother: {addresses: [one, {city: b}]}}}: person print a is "Bob" print b is "Moquasset NY, 10021" test: { person: { address: [ "------" "Street 101" "Apt 101" "City 101" ] } } {person: {address: [ignore, addr...]}}: test print addr.join(', ') is "Street 101, Apt 101, City 101"