How to use the minimalmodbus._checkNumerical function in minimalmodbus

def testNotNumericInput(self):
        for value in _NOT_NUMERICALS:
            self.assertRaises(TypeError, minimalmodbus._checkNumerical, value, minvalue=40.0)
        for value in _NOT_NUMERICALS_OR_NONE:
            self.assertRaises(TypeError, minimalmodbus._checkNumerical, 47.0,  minvalue=value, maxvalue=50.0,  description='ABC')
            self.assertRaises(TypeError, minimalmodbus._checkNumerical, 47.0,  minvalue=40.0,  maxvalue=value, description='ABC')

def testKnownValues(self):
        minimalmodbus._checkNumerical(47, minvalue=None, maxvalue=None, description='ABC')
        minimalmodbus._checkNumerical(47, minvalue=40, maxvalue=50, description='ABC')
        minimalmodbus._checkNumerical(47, minvalue=-40, maxvalue=50, description='ABC')
        minimalmodbus._checkNumerical(47, description='ABC', maxvalue=50, minvalue=40)
        minimalmodbus._checkNumerical(47, minvalue=None, maxvalue=50, description='ABC')
        minimalmodbus._checkNumerical(47, minvalue=40, maxvalue=None, description='ABC')
        minimalmodbus._checkNumerical(47.0, minvalue=40)
        minimalmodbus._checkNumerical(47, minvalue=40.0, maxvalue=50, description='ABC')
        minimalmodbus._checkNumerical(47.0, minvalue=40, maxvalue=None, description='ABC' )
        minimalmodbus._checkNumerical(47.0, minvalue=40.0, maxvalue=50.0, description='ABC' )

def testKnownValues(self):
        minimalmodbus._checkNumerical(47, minvalue=None, maxvalue=None, description='ABC')
        minimalmodbus._checkNumerical(47, minvalue=40, maxvalue=50, description='ABC')
        minimalmodbus._checkNumerical(47, minvalue=-40, maxvalue=50, description='ABC')
        minimalmodbus._checkNumerical(47, description='ABC', maxvalue=50, minvalue=40)
        minimalmodbus._checkNumerical(47, minvalue=None, maxvalue=50, description='ABC')
        minimalmodbus._checkNumerical(47, minvalue=40, maxvalue=None, description='ABC')
        minimalmodbus._checkNumerical(47.0, minvalue=40)
        minimalmodbus._checkNumerical(47, minvalue=40.0, maxvalue=50, description='ABC')
        minimalmodbus._checkNumerical(47.0, minvalue=40, maxvalue=None, description='ABC' )
        minimalmodbus._checkNumerical(47.0, minvalue=40.0, maxvalue=50.0, description='ABC' )

def testKnownValues(self):
        minimalmodbus._checkNumerical(47, minvalue=None, maxvalue=None, description='ABC')
        minimalmodbus._checkNumerical(47, minvalue=40, maxvalue=50, description='ABC')
        minimalmodbus._checkNumerical(47, minvalue=-40, maxvalue=50, description='ABC')
        minimalmodbus._checkNumerical(47, description='ABC', maxvalue=50, minvalue=40)
        minimalmodbus._checkNumerical(47, minvalue=None, maxvalue=50, description='ABC')
        minimalmodbus._checkNumerical(47, minvalue=40, maxvalue=None, description='ABC')
        minimalmodbus._checkNumerical(47.0, minvalue=40)
        minimalmodbus._checkNumerical(47, minvalue=40.0, maxvalue=50, description='ABC')
        minimalmodbus._checkNumerical(47.0, minvalue=40, maxvalue=None, description='ABC' )
        minimalmodbus._checkNumerical(47.0, minvalue=40.0, maxvalue=50.0, description='ABC' )

def _checkSetpointValue( setpointvalue, maxvalue ):   
    """Check that the given setpointvalue is valid.
    
    Args:
        * setpointvalue (numerical): The setpoint value to be checked. Must be positive.
        * maxvalue (numerical): Upper limit for setpoint value. Must be positive.
        
    Raises:
        TypeError, ValueError
    
    """
    if maxvalue is None:
        raise TypeError('The maxvalue (for the setpoint) must not be None!')
    minimalmodbus._checkNumerical(setpointvalue, minvalue=0, maxvalue=maxvalue, description='setpoint value')   

def _checkTimeValue( timevalue, maxvalue ):   
    """Check that the given timevalue is valid.
    
    Args:
        * timevalue (numerical): The time value to be checked. Must be positive.
        * maxvalue (numerical): Upper limit for time value. Must be positive.
        
    Raises:
        TypeError, ValueError
    
    """
    if maxvalue is None:
        raise TypeError('The maxvalue (for the time value) must not be None!')
    minimalmodbus._checkNumerical(timevalue, minvalue=0, maxvalue=maxvalue, description='time value')