How can I declare an array (or at least list) in @dataclass? A something like below:
from dataclasses import dataclass
@dataclass
class Test():
my_array: Array[ChildType]
Asked
Active
Viewed 3.1k times
12
ruohola
- 21,987
- 6
- 62
- 97
Denis Sologub
- 7,277
- 11
- 56
- 123
-
1`my_array: list`? Or `List[...]` if you want to specify the element type. But you'll have to import those things from the right places - `dataclass` isn't in `abc`. – jonrsharpe Aug 28 '19 at 10:55
1 Answers
37
There is no Array datatype, but you can specify the type of my_array to be typing.List:
from dataclasses import dataclass
from typing import List
@dataclass
class Test:
my_array: List[ChildType]
And from Python 3.9 onwards, you can conveniently just use list:
from dataclasses import dataclass
@dataclass
class Test:
my_array: list[ChildType]
ruohola
- 21,987
- 6
- 62
- 97
-
Thank you for answer, I've updated question. I thought it has primary type – Denis Sologub Aug 28 '19 at 11:01
-