How to solve TypeError: fill_pos() missing 1 required positional argument: 'checkerobject'?

Question

Python

field.py file

class Field: 
    #Здесь код
    def fill_pos(self, position, checker, team, checkerobject):
        self.checkerboard[int(position[1]) - 1]['field'][position[0]][1] = self.fill
        self.checkerboard[int(position[1]) - 1]['field'][position[0]][2] = checker
        self.checkerboard[int(position[1]) - 1]['field'][position[0]][3] = team
        self.checkerboard[int(position[1]) - 1]['field'][position[0]][4] = checkerobject

Another file

import field, checkers
field = field.Field
checker1 = checkers.Checker('0', 1, ['A', 1], field)
field.fill_pos(['A', 1], False, 1, checker1)

Error: field.fill_pos(['A', 1], False, 1, checker1)
TypeError: fill_pos() missing 1 required positional argument: 'checkerobject'

Answer 1

field = field.Field()