Mandalika's scratchpad [ Work blog @Oracle | My Music Compositions ]

Old Posts: 09.04  10.04  11.04  12.04  01.05  02.05  03.05  04.05  05.05  06.05  07.05  08.05  09.05  10.05  11.05  12.05  01.06  02.06  03.06  04.06  05.06  06.06  07.06  08.06  09.06  10.06  11.06  12.06  01.07  02.07  03.07  04.07  05.07  06.07  08.07  09.07  10.07  11.07  12.07  01.08  02.08  03.08  04.08  05.08  06.08  07.08  08.08  09.08  10.08  11.08  12.08  01.09  02.09  03.09  04.09  05.09  06.09  07.09  08.09  09.09  10.09  11.09  12.09  01.10  02.10  03.10  04.10  05.10  06.10  07.10  08.10  09.10  10.10  11.10  12.10  01.11  02.11  03.11  04.11  05.11  07.11  08.11  09.11  10.11  11.11  12.11  01.12  02.12  03.12  04.12  05.12  06.12  07.12  08.12  09.12  10.12  11.12  12.12  01.13  02.13  03.13  04.13  05.13  06.13  07.13  08.13  09.13  10.13  11.13  12.13  01.14  02.14  03.14  04.14  05.14  06.14  07.14  09.14  10.14  11.14  12.14  01.15  02.15  03.15  04.15  06.15  09.15  12.15  01.16  03.16  04.16  05.16  06.16  07.16  08.16  09.16  12.16  01.17  02.17  03.17  04.17  06.17  07.17  08.17  09.17  10.17  12.17  01.18  02.18  03.18  04.18  05.18  06.18  07.18  08.18  09.18  11.18  12.18  01.19  02.19  05.19  06.19  08.19  10.19  11.19  05.20  10.20  11.20  12.20 


Sunday, December 30, 2018
 
Python Lambda Functions - Quick Notes

Lambda functions:

Syntax:

 lambda argument(s): expression

eg.,

A trivial example.

def areaofcircle(radius):
 return math.pi * radius * radius

can be written as:

circlearea = lambda radius : math.pi * radius * radius

In this example, the lambda function accepts a lone argument radius; and the function evaluates the lambda expression (π * radius2) to calculate the area of a circle and returns the result to caller.

In case of lambda function, the identifier "circlearea" is assigned the function object the lambda expression creates so circlearea can be called like any normal function. eg., circlearea(5)

Another trivial example that converts first character in each word in a list to uppercase character.

>> fullname = ["john doe", "richard roe", "janie q"]
>>> fullname
['john doe', 'richard roe', 'janie q']
>>> map(lambda name : name.title(), fullname)
['John Doe', 'Richard Roe', 'Janie Q']

Labels:




Comments: Post a Comment



<< Home


2004-2019 

This page is powered by Blogger. Isn't yours?