[FIXED] Want to know how lamda function work in python

Issue

I'm trying to understand the lambda function in python and got this.

When I store the instance of lambda function in a Dict. It gives the expected result inside of the loop. But outside of the loop, it always stored the last instance, I think.

Can someone explain why this happening? and how the lambda function actually works when we store their instance.

Code:

d = {}

for x in range(4):
    d[x] = lambda n: str(n*x)
    print(d[x](1))

print(d[1](2))
print(d[2](2))
print(d[3](2))

Output:

0
1
2
3
6
6
6

Solution

given some x these 2 functions are equivalent:

f1 = lambda n: str(n * x)

def f2(n):
    return str(n * x)

all you are doing in addition to that is to put several functions (for several values of x) in a dictionary.

Answered By - hiro protagonist