本期主持：
时间点：
视频和链接
第一个视频 《Edwin Jung - Mocking and Patching Pitfalls - PyCon 2019》
- httmock
- https://projectlombok.org/
- https://site.mockito.org/
- https://martinfowler.com/bliki/TestDouble.html
- factory_boy
第二个视频 《Dustin Ingram - PEP 572: The Walrus Operator - PyCon 2019》
- PEP 572 -- Assignment Expressions
- PEP 581 -- Using GitHub Issues for CPython
- Guido van Rossum resigns as Python leader
- Python elects a steering council
- PEP 570 -- Python Positional-Only Parameters
- Discussing PEP 572
