[ameliaquining]

Flexible environment only. This matters because the standard environment's pricing structure is a lot better for apps that go significant periods without much traffic, or that have spiky traffic patterns that necessitate fast scaling.

[keganunderwood]

What prevents Google from offering Python3 support in standard environment? Is this a business decision?

[ameliaquining]

It's on the roadmap and there's a public statement that it'll ship next year.