从另一个文件调用方法AttributeError: object has no attribute

Question

I'm trying to create a unit test and I'm having some errors when I try to use a function from another file. You can see an example of the basic idea of what I am trying to do below. I am a beginner in Python so I'm not sure what's the problem.

In file 1: model.py

Class Model(parameters):

      def calc_maximum(self, data, thresholds): 
          df['Max']= ...
          return df

      def calc_model_output(self,data,param,param2): 
          S=self.calc_maximum(data,thresholds)
          Si=S+param2
          return Si
          

in file 2: test.py

import model as ml
import unittest 
...
...

class Tests(unittest.Testcase):
      def test_calc_maximum(self):
          Expected1=ml.Model.calc_maximum(self,input1, input2)
      def test_calc_model_output(self): 
          Expected2=ml.Model.calc_model_output(self,input1,input2,input3) 

when I try to run test.py file, the test for Expected1 seems to work ok, but I get the following error from the Expected2 row: AttributeError: 'Tests' object has no attribute 'calc_maximum .

Any ideas?

Answer 1

Just add brackets after Model in Expected1, ie make Expected1

Expected1=ml.Model().calc_maximum(input1,input2)

Do the same for Expected2