Update repo to use python 3.6.10

[chenrui333]

Purpose | 本PR解决的问题

Kind of related to #28

• Closes #

Changes | 本PR的更改

Update repo python version to 3.8

[rexwangcc]

LGTM, while I agree with using Py3.x everywhere, I'm not sure if Py3.8 is supported by the current deployment to aliyun. @LiuChangFreeman Could you answer this? If it's not supported, we could keep Py3.7, since there are only a few new changes in 3.8 from 3.7 (e.g. the walrus operator, etc.)

[chenrui333]

yeah, agree. How does the deployment model look like?

[rexwangcc]

As far as I can tell, it's deployed as a serverless app on Function Compute (which looks similar to Cloud Functions or Lambda Functions), but I could be wrong.

[chenrui333]

阿里云好像只用3.6, :sad:

Last Updated: Aug 21, 2019
Function Compute currently supports the following Python runtime environments:

• Python 2.7 with runtime version 2.7
• Python 3.6 with runtime version 3

Pretty far behind AWS.

[chenrui333]

如果要deploy 到 阿里云上面 我可以帮忙做 infra as code.

[rexwangcc]

如果您是指类似Terraform 之类的，我觉得目前的codebase还没有这个需求，并且代码也没有稳定到需要很成熟的DevOps。不介意的话您可以提交一个issue来记录这个想法。

此外，不介意的话，请您将PR中的版本改为Py3.6

[LiuChangFreeman]

仅限于python3.6的特性

[chenrui333]

没问题 我马上改成 python 3.6

[chenrui333]

application 端 不一定要用 terraform, 可以用 serverless

[rexwangcc]

Thanks and LGTM, docker run -it aliyunfc/runtime-python3.6:build python tells 3.6.3, so there might be some minor tweaks with the deployment.