ultratb.py 文件源码

def get_records(self, etb, number_of_lines_of_context, tb_offset):
        try:
            # Try the default getinnerframes and Alex's: Alex's fixes some
            # problems, but it generates empty tracebacks for console errors
            # (5 blanks lines) where none should be returned.
            return _fixed_getinnerframes(etb, number_of_lines_of_context, tb_offset)
        except UnicodeDecodeError:
            # This can occur if a file's encoding magic comment is wrong.
            # I can't see a way to recover without duplicating a bunch of code
            # from the stdlib traceback module. --TK
            error('\nUnicodeDecodeError while processing traceback.\n')
            return None
        except:
            # FIXME: I've been getting many crash reports from python 2.3
            # users, traceable to inspect.py.  If I can find a small test-case
            # to reproduce this, I should either write a better workaround or
            # file a bug report against inspect (if that's the real problem).
            # So far, I haven't been able to find an isolated example to
            # reproduce the problem.
            inspect_error()
            traceback.print_exc(file=self.ostream)
            info('\nUnfortunately, your original traceback can not be constructed.\n')
            return None