How to type hint object as `PointType` in Python aioinflux?

I have a dataclass similar to the one defined in the docs :

from dataclasses import dataclass

@lineprotocol
@dataclass
class Trade:
    timestamp: TIMEINT
    instrument: TAGENUM
    source: TAG
    side: TAG
    price: FLOAT
    size: INT
    trade_id: STR

when I try to insert objects of this class in aioinflux write(data: PointType) method I get a static typing warning that my object is not of PointType. I used PointType for type hinting my input because this is the type that the write() method accepts. How can I make my class return objects of PointType type?

You can convert your dataclass object into a dictionary and pass into write method. Because PointType is a type variable which is defined as.

if pd:
    PointType = TypeVar('PointType', Mapping, dict, bytes, pd.DataFrame)
    .....
else:
    PointType = TypeVar('PointType', Mapping, dict, bytes) 
    .....

This means that PointType must be exactly of type mapping or dict or bytes or pd.DataFrame(if pandas is installed)

The dataclasses module already provides a function to convert dataclass obj to a dict which is sufficient to make the static type checker happy!

from dataclasses import asdict
your_write_method(asdict(your_dataclass_object))