skipping.py 文件源码

def istrue(self):
        try:
            return self._istrue()
        except Exception:
            self.exc = sys.exc_info()
            if isinstance(self.exc[1], SyntaxError):
                msg = [" " * (self.exc[1].offset + 4) + "^",]
                msg.append("SyntaxError: invalid syntax")
            else:
                msg = traceback.format_exception_only(*self.exc[:2])
            pytest.fail("Error evaluating %r expression\n"
                        "    %s\n"
                        "%s"
                        %(self.name, self.expr, "\n".join(msg)),
                        pytrace=False)