How to check dict type in schema

[LinYunling]

Define a schema, use dict type:

schema Attr:
    attr: {str:str}

How to check the key and value?
Such as key match ^[a-z][a-z0-9]{0,63}$

[Peefy]

Here's a simple example:

import regex

schema Attr:
    attr: {str:str}

    check:
        all k in attr {
            regex.match(k, r"^[a-z][a-z0-9]{0,63}$")
        }

a = Attr{
    attr: {"+==": "aaa"}
}

[LinYunling]

thanks