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> The fact you are warned in advance that something bad is going to happen doesn't make it less bad. Just more manageable. Exactly, it was very manageable. The

> The fact you are warned in advance that something bad is going to happen doesn't make it less bad. Just more manageable. Exactly, it was very manageable. They could have avoided writing a whole library (FastAPI) knowing it was going to break inevitably. They could have raised concerns during three years.

BiteCode_dev 6y ago
1 - FastAPI was created before the change was announced. 2 - You assume they knew about it. It's a lot of work to create FOSS, it's very easy to miss those things given the huge amount of information you have to check for compat and security. Hell, I certainly don't assume my main dependency, which is a rock solid language no changing the major version and used by millions is going to break my project. I don't read each line of each changelog of each version upgrade of each of my dependency. 3 - Even if they knew about it, they may never have realized it would have broken something before people told them so. 4 - They may even have noticed, 3 years ago, but forgot about it. It was 3 years ago! It's only human. It's FOSS.
- williamsmj 6y ago
  > 1 - FastAPI was created before the change was announced. No, it wasn't. You might be thinking of pydantic. FastAPI's first commit was December 2018: https://github.com/tiangolo/fastapi/commit/406c092a3bf65bbd4405ce87611a7e0b9c0ae706 https://github.com/tiangolo/fastapi/commit/406c092a3bf65bbd4.... PEP 563 was the first item in the Python 3.7.0 release notes earlier that year.
  - BiteCode_dev 6y ago
    Indeed, my mistake.
- aflag 6y ago
  It is surprising that they missed this change, though. Given how core type hints are for their projects and how broadly publicised the changes and developments in type hints were. I'd be surprised if there weren't any issues raised against their projects about those. It feels it'd be harder to miss it than it'd be to stumble upon it. Also, weird for them to forget that there is a change that will break the foundations of their libraries. You'd think they would have that in the back of their minds and, being stakeholders, even being part of the discussions. Like you said, it's FOSS and, most importantly, python is a community project.

BiteCode_dev 6y ago

1 - FastAPI was created before the change was announced. 2 - You assume they knew about it. It's a lot of work to create FOSS, it's very easy to miss those things given the huge amount of information you have to check for compat and security. Hell, I certainly don't assume my main dependency, which is a rock solid language no changing the major version and used by millions is going to break my project. I don't read each line of each changelog of each version upgrade of each of my dependency. 3 - Even if they knew about it, they may never have realized it would have broken something before people told them so. 4 - They may even have noticed, 3 years ago, but forgot about it. It was 3 years ago! It's only human. It's FOSS.

williamsmj 6y ago
> 1 - FastAPI was created before the change was announced. No, it wasn't. You might be thinking of pydantic. FastAPI's first commit was December 2018: https://github.com/tiangolo/fastapi/commit/406c092a3bf65bbd4405ce87611a7e0b9c0ae706 https://github.com/tiangolo/fastapi/commit/406c092a3bf65bbd4.... PEP 563 was the first item in the Python 3.7.0 release notes earlier that year.
- BiteCode_dev 6y ago
  Indeed, my mistake.
aflag 6y ago
It is surprising that they missed this change, though. Given how core type hints are for their projects and how broadly publicised the changes and developments in type hints were. I'd be surprised if there weren't any issues raised against their projects about those. It feels it'd be harder to miss it than it'd be to stumble upon it. Also, weird for them to forget that there is a change that will break the foundations of their libraries. You'd think they would have that in the back of their minds and, being stakeholders, even being part of the discussions. Like you said, it's FOSS and, most importantly, python is a community project.