Ternary operation
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In mathematics, a ternary operation is any operation of arity three, that is, that takes three arguments. A ternary operator (sometimes inaccurately referred to as a tertiary operator) is an operator that takes three arguments.
Many programming languages that use C-like syntax feature a ternary operator, ?:; unqualified, "ternary operator" usually refers to this. The ?: operator is used as a shorthand replacement for the if-then-else conditional statement; the general form is condition ? op1 : op2. If condition is true, the statement evaluates as op1; otherwise, it evaluates as op2.
Though it has been delayed for several years by disagreements over syntax, a ternary operator for Python has been approved as PEP 308 and will be added to the upcoming 2.5 release.
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