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Can I use lambda expression to count the elements that I’m interested?
For example, when I need to count the elements in a list that is more than two, I tried this code which returns 0.
x = [1,2,3]
x.count(lambda x: x > 2)
Note: "more than" is
>…=>is not a valid operator.Try
sum(y > 2 for y in x)Or, as suggested by @Jochen, to guard against non-conventional nth-party classes, use this:
sum(1 for y in x if y > 2)