how to pickle a lambda?

[Erik Max Francis]

Alejandro Dubrovsky wrote:

> i've got a class that defines something like the following:
> 
> def t(self,a,b):
>         ...
> 
> def h(self):
>         self.thelambdafunctiontobepickled = lambda x: self.t(x,4)
> 
> is there any simple way of pickling that lambda function above so that
> when i unpickle it will be set to the right function?

You can't pickle a lambda function.  However, you could for instance
pickle a string representation of it that when eval'd gives the desired
lambda.

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