Define a list with type

Question

I come from Java, and I want to do some data transfer objects (DTOs) like this:

class ErrorDefinition():
    code = ''
    message = ''
    exception = ''

class ResponseDTO():
    sucess = True
    errors = list() # How do I say it that it is directly of the ErrorDefinition() type, to not import it every time that I'm going to append an error definition?

Or is there a better way to do this?

Answer 1

You can type a list as python 3.8.4

https://docs.python.org/3/library/typing.html

from typing import List
vector:List[float] = list()

or

from typing import List
vector:List[float] = []

Python is dynamically typed however https://www.python.org/dev/peps/pep-0484/ Typing makes it easier to read code, easier understand it, make efficient use of your IDE tooling and create higher quality software. I guess that's why it's in the PEP.