On Sep 6, 2017, at 23:10, Terry Reedy <tjre...@udel.edu> wrote: > > Environmental variables are set to strings, not objects. It is not clear how > you intend to handle the conversion.
The environment variable names a module import path. Without quibbling about the details of the syntax (because honestly, I’m not convinced it’s a useful feature), it would work roughly like: * The default value is equivalent to PYTHONBREAKPOINTHOOK=pdb.set_trace * breakpoint() splits the value on the rightmost dot * modules on the LHS are imported, then the RHS is getattr’d out of that * That’s the callable breakpoint() calls -Barry
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