Python saying I'm passing in too many parameters to my function? -

i have python code contains unit tests below:

class suncalctestcases(unittest.testcase):     """tests `suncalc.py`."""     def near(val1, val2):         return abs(val1 - val2) < (margin or 1e-15)      def test_getpositions(self):         """get sun positions correctly"""         sunpos = suncalc.getposition(self.date, self.lat, self.lng)         az = sunpos["azimuth"]         res = self.near(az, -2.5003175907168385)  

but when run error:

traceback (most recent call last):   file "test.py", line 64, in test_getpositions     res = self.near(az, -2.5003175907168385) typeerror: near() takes 2 arguments (3 given) 

i new python apologize if missing here, far can tell passing in 2 parameters when call function: self.near(az, -2.5003175907168385)

can tell me why thinks i'm passing in 3 parameters?

you forgot pass self in near function

def near(self, val1, val2):

meaning of @classmethod , @staticmethod beginner?

what difference between @staticmethod , @classmethod in python?