, , - , , . : > (), >= ( ), < (), <= ( ), = (), < > ( )
(True ), (False ). , . : And , , ; Or , , , .
, x > y And a >= 5 , x > y a >= 5. x > y Or x = a , x > y, a >= 5, .
And Or, , :
x >= 1 And x =< 10 Or x = 15
, [1:10] , = 15.
IfThenElse () :
If < > Then < 1 > Else < 2 >
: , 1, 2.
Else.
, End If:
If < > Then
< 1>
< 1>
Else
< 2>
< 2>
End If
, If .
1. - If:
; ;