How can I get the stack trace in Specman?

Is there any way to get the stack trace in Specman? I patched the functions that force signals to tell me when signals are forced. I want to b开发者_高级运维e able to tell where the forcing originated.

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print_stack_trace()

It is beautiful. I only wish I could extend the 'assert' construct so it always prints out a stack-trace like python...

btw, this method can take multiple seconds to evaluate. You don't want to do print_stack_trace() unless you need to or you've hit an assertion.