python--ternary operation, lambda expression

One or three-dollar operation

Format: Object = value 1 if condition else value 2 assigns value 1 to object when condition is set, and vice versa assigns value 2 to object

>>> name = 1 if True else 2>>> name1>>> name = 1 if False else 2>>> name2

General formula: Code 1 if condition else code 2 when the condition is set to execute if the preceding code 1, is not established then the code is executed 2

Second, lambda expression

Format: function name = lambda parameter: Functional code

parameterless F2 = Lambda:123print (F2 ()) Result: 123# parameter F2 = lambda a1,a2:a1+a2print (f2) Results: 3

　　

python--ternary operation, lambda expression