[code-quality] Introducing Rene Zhang

Hi, Rene Zhang is doing his internship at Google, and has helped debug some parts of our internal pylint stack. Doing this he has uncovered some issues for which he will be sending in some patches he developed at Google. Thank you, Daniel ι══ι══ι══ι══ι══ι══ι══ι══ι══ι══ι══ι══ι══ι══ι══ι══ι══ι══ι══ι *Daniel Balparda de Carvalho* 梅巴達 <balparda@google.com> Python Team, Google US-MTV-CL2 3K5B, +1-650-933-8587