lambda v: v is not None,
如果报错 ModuleNotFoundError: No module named 'mmcv。_ext'，说明编译仍有问题，需要检查：
，详情可参考同城约会
4. Phrasee Phrasee uses artificial intelligence to help you write more effective subject lines. With its AI-based Natural Language Generation system, Phrasee uses data-driven insights to generate millions of natural-sounding copy variants that match your brand voice. The model is end-to-end, meaning when you feed the results back to Phrasee, the prediction model rebuilds so it can continuously learn from your audience.
Фото: Yves Herman / Reuters