if, elif, else

Val mellan alternativ:
    if x < y: print "x is lower" # on the same line
    
    if x < y:
        print "x is lower" # using indentation
        print "y is not lower" # also executed
    
    if a == b:
        print "a is equal to b"
        if c == b:
            print "Oh, joy! All three equal"
    elif a < b:
        print "a is smaller than b"
    else:
        print "b is smaller than a"
Villkoret i if/elif är ett godtyckligt uttryck som tolkas som sanningsvärde