python-Anonymous functions

Source: Internet
Author: User

A lambda function is a minimal function that quickly defines a single line, and can be used in any regular version where a function is needed:
def Fun (x,    y) return X*y
Lambda version:
Lambda x,y:x*yprint R (2,3)
Format: Lambda parameter list: return [expression] variable because lambda returns a function object (built as a function object), you need to define a variable to receive the benefits of an anonymous function:-Using a lambda to write some scripts can save you from defining functions  To streamline the code. -for some abstract functions that will not be reused anywhere else, sometimes a function name is a problem, and using lambda does not have to consider naming problems-using lambda at some point then the code is easier to understand with reduce's application reduce (fun,list) re Duce the number in the list is assigned to the fun calculation note that the fun must be a number-to-digit operation, list must be an integer number example: 1 to 100 of the cumulative
Reduce (lambda x,y:x + y,xrange (1,101)

python-Anonymous functions

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