I have in my test module:

import pytest
from src.model_code.central import AgentBasicclass AgentBasicTestee(AgentBasic):pass@pytest.fixture()
def agentBasic():return AgentBasicTestee()@pytest.mark.parametrize('alpha, beta, delta, expected', [(2, 1, 1, pytest.approx(0.5)),(2, 2, 2, pytest.approx(-0.9375 / 0.75)),
])  
def test_b3(agentBasic, AgentCOne,alpha, beta, delta, expected):assert(agentBasic.b3(alpha, beta, delta) == expected)

and in my import module

from src.model_code.crra_utility import AgentCrra
AgentCOne = AgentCrraclass AgentBasic:@staticmethod def b3(alpha, beta, delta):"""define matric element b3"""k = AgentCOne.k_bar(alpha, beta, delta)c = AgentCOne.c_bar(alpha, beta, delta)return -c/k

The error message I get is:

> c = AgentCOne.c_bar(alpha, beta, delta) E TypeError: c_bar() missing 1 required positional argument: 'delta' Note:

def c_bar(self, alpha, beta, delta):"""non-stochastic steady-state for consumption"""k = self.k_bar(alpha, beta, delta)return k ** alpha  - delta * k 

So far, self takes one of my parameters s.t. delta stays empty. How can I prevent hat?

It seems like you need to instantiate AgentCOne before calling c_bar on it because c_bar is not a static method (and will take the first argument as self).

c = AgentCOne.c_bar(alpha, beta, delta)
# should be
c = AgentCOne().c_bar(alpha, beta, delta)