How to fix 'NameError: name 'field' is not defined' [closed]

Question

In my attempt to create a class dots with the fields n and xy as shown below:

from dataclasses import dataclass

@dataclass
class dots:
    n: int = 200
    xy: List[int] = field(default_factory=list)

I am constantly getting the error :

NameError: name 'field' is not defined

Any ideas on how to fix it?

My operating system is Ubuntu 18.04.3 LTS, and the kernel version 4.15.0-58-generic. I am using Python 3.6.4

Answer 1

You need to import field() to use it in your code:

from dataclasses import dataclass, field