Is it normal to have different results between: Using a lambda expression And using def function To express constraints with scipy optimizer I ll add code later
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Lambda and first class functions not equivalent, for instance the latter have closure the former do not. – Learning is a mess Dec 02 '21 at 10:21
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Any documentation? Thanks – user11966723 Dec 02 '21 at 10:52
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https://stackoverflow.com/questions/2295290/what-do-lambda-function-closures-capture has a lot of insights, don't know about a proper documentation page – Learning is a mess Dec 02 '21 at 10:58
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Share your code and we can look at your specific case. – Learning is a mess Dec 02 '21 at 10:59
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1If the functon/lambda depends only on the passed arguments, they should be the same. But if they use a some additional variable that you expect to define either a definition time or runtime, you could run into problems. e.g. `lambda x: x+i`, what `i` is being used? – hpaulj Dec 02 '21 at 17:07
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They should be identical unless you're (ab)using somewhat esoteric language features, e.g. pulling variables from outer scopes.
So most likely, there's an issue in your code.
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