I have questions about using `mypy` Code 1 How can I cast or

Question

I have questions about using `mypy` Code 1 How can I cast or at least tell that output is a type `Ouput str ` and not `Output any ` ```r53 zone = aws route53 get zone zone id=SHARED STACK REF require output hosted zone id ``` mypy output ```Argument zone id to get zone has incompatible type Output Any expected Optional str ``` Code 2 Why do I get an error and how to prevent that It looks like that `profile` attribute is dynamically created correct ```ec1 provider = aws Provider f PREFIX ec1 region profile=aws config profile region=ec1 region ``` mypy output ``` main py 27 error Module has no attribute profile ```

prehistoric-activity-61023 · Answer

First let s talk about python specific things What options you have explicitly cast a variable using `cast` <https docs python org 3 library typing html typing cast> suggested in this case ignoring type so `mypy` doesn t complain using ` type ignore` comment I d use it as a last resort fix the code so it actually returns the expected types ideal but the hardest one

prehistoric-activity-61023 · Answer

If we were to fix the code I d require to either extend `pulumi StackReference` class or create some helper methods yourself that does type assertions `get string output stack ref pulumi StackReference name pulumi Input str gt pulumi Output str ` Another problem might be AWS provider that expects `Optional str ` instead of `Input str `

prehistoric-activity-61023 · Answer

Regarding your second question about `profile` I d have to take a look but if the following code works you might be right

prehistoric-activity-61023 · Answer

~Although I m not sure the mypy error is related to this part~ thinking face ~ I ve created a similar code in my project and it works as expected `profile` is declared as `Optional pulumi Input str ` so it shouldn t cause any issues ~ EDIT Ok there is some magic in `aws config` I guess

prehistoric-activity-61023 · Answer

well it doesn t look pretty to me it actually overrides the modules so when you load it you re gonna get a class instead kinda

prehistoric-activity-61023 · Answer

You can workaround this by declaring a helper variable like ```aws config aws config vars ExportableConfig = typing cast aws config aws config vars ExportableConfig ``` and instead of ```aws config profile``` you could use ```aws config profile``` Still it doesn t look good IMO neutral face

prehistoric-activity-61023 · Answer

If I d like to have zero mypy warning I d declare helper function ```def aws profile gt str return aws config profile type ignore``` and use it that instead of directly accessing `aws config` object