On Wed, Sep 2, 2020 at 10:23 AM Andras Tantos <python-l...@andras.tantosonline.com> wrote: > I did see these macros in the CPython source code. What it seems to > imply is that if I wanted to do what I intend, that is to hook every > local variable assignment, I would have to modify the AST. That seems > rather more effort than simply supplying my own locals dictionary. I > will try to look myself as well, but do you have an inkling as to how > complex would it be to convince CPython to optimize locals only if no > custom locals is provided during exec? > > To my untrained eye, it seems to be an unsafe optimization that breaks > the contract of the exec API.
By the time you're calling exec, it's too late to decide whether to optimize, since you're using a precompiled code object. If you want that behaviour, try exec'ing a string of code instead. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
