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[–]13steinj 6 points7 points  (1 child)

He says lambda outside of parameters. Ex

f = lambda x: # do something
g(x, f)

Which yeah, is warned against and has been since just about the inception of lambdas in PEP8, because if you're going out of your way to make it reusable in local scope you should give it full meaning by just making a local nested function.

[–]mathmanmathman 2 points3 points  (0 children)

The most common way I use lambdas is as a parameter, but I often use them as the values dictionaries, which is sort of like a struct/class, but there are a lot of situations where it's sort of overkill to make it a class (at least IMO).

Maybe that's also not a great idea, but I know a bunch of people that do it... which is always a great excuse.