The Python Lambda Function Has Become A Devil

The Python Lambda Function Has Become A Devil

The Python Lambda Function Has Become A Devil. In this article today, I will say something on the negative side about Lambda functions. I’m not saying stop using it, but definitely, there is a concern.

If you are not a newbie of Python, I bet you must know Lambda function. I have to say that I like to use the Lambda function in some circumstances. For example, the Pandas data frame apply() function, map() or filter() functions, they are naturally compatible with Lambda functions and make our life easier. We don’t need to literally declare an explicit function. Instead, just define a logic in-line.

However, in this article today, I will say something on the negative side about Lambda functions. I’m not saying stop using it, but definitely, there is a concern. This concern starts from a question I have seen from my younger friend who is studying in one of the Top 20 University in the world.

f = (lambda x: x((lambda x: x(lambda x: x))(x)))(lambda x: x)

Given this function `f_`, please tell what is the output of `f(1)`._

BTW, you’re not allowed to use a Python interpreter, just get the answer by reading and thinking because this is an online quiz with time constraints :)

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