Thanks for the report.
I've added that to the list of things we should fix in pickling and 
unpickling Function object, see https://github.com/Theano/Theano/issues/5736

On Thursday, August 3, 2017 at 6:55:46 AM UTC-4, Artur Speiser wrote:
>
> I stumbled upon a weird bug:
>
> X = T.vector()
> theano_func = theano.function([X], {'vec':X**2})
> theano_func([2,3,4])
>
>
> {'vec': array([  4.,   9.,  16.], dtype=float32)}
>
> with open('test.pkl', 'wb') as f:
>     pickle.dump(theano_func, f, protocol=pickle.HIGHEST_PROTOCOL)
>
> with open('test.pkl', 'rb') as f:
>     func_loaded = pickle.load(f) 
>
> func_loaded([2,3,4])
>
> [array([  4.,   9.,  16.], dtype=float32)]
>
>
> So for some reason after pickling/unpickling the function returns a list 
> instead of dict. Any ideas?
>
>
>
>

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