Python Lambda Confusion

Question

def printName(name):
    print(name)

if __name__ == "__main__":
    lambdaList = []
    for i in range(4):
        lambdaList.append(lambda : printName(i))
        lambdaList[0]()

I have just learned lambda function. In this case I would like to define different lambda functions like above. However, the result of this script is:

0
1
2
3

I'm a little bit confused about this result. Why is the first lambda function changed when I append new elements to this list. I wish someone can help me.

Answer 1

It's because the i in the lambda is the same i in memory as the one being updated by the for loop.