_common.py 文件源码

def __enter__(self, *args, **kwargs):
            rv = super(WarningTestMixin._AssertWarnsContext, self).__enter__(*args, **kwargs)

            if self._showwarning is not self._module.showwarning:
                super_showwarning = self._module.showwarning
            else:
                super_showwarning = None

            def showwarning(*args, **kwargs):
                if super_showwarning is not None:
                    super_showwarning(*args, **kwargs)

                self._warning_log.append(warnings.WarningMessage(*args, **kwargs))

            self._module.showwarning = showwarning
            return rv