tell me how to use lambda funtion!??????

Question

i am starting pyspark i wanna know what are the import concepts function need to learn inorder to start python

Answer 1

lambda x,y: x + y
def fun(x,y): return x + y

You can use a lambda function immediately after the difinition:

print((lambda x: x*2)(5))
》10

And it's useful when you need a function temporarily:

lst = list(map(lambda x: x+2, [0,1]))
print(lst)
》[2,3]