Variables Flashcards
1
Q
variable names:
A
A variable name must consist of only letters, digits, and/or underscores (_)
A variable name must start with a letter or an underscore
A variable name should not be a reserved word
2
Q
“Reserved words” are:
A
and del from not while as elif global or with assert else if pass yield break except import print class exec in raise continue finally is return def for lambda try
3
Q
Can you think of a way to swap the values of two variables that does not need a third variable as a temporary storage? In the code block below, try to implement the swapping of the values of a and b without using a third variable.
A
a = 17 b = 23 print( "a =", a, "and b =", b ) a += b b = a - b a = a -b print( "a =", a, "and b =", b )