How to use the uwg.solarcalcs.SolarCalcs function in uwg

self.forc.uDir = self.forcIP.uDir[self.ceil_time_step]          # wind direction
            # specific humidty (kg kg-1)
            self.forc.hum = self.forcIP.hum[self.ceil_time_step]
            self.forc.pres = self.forcIP.pres[self.ceil_time_step]          # Pressure (Pa)
            self.forc.temp = self.forcIP.temp[self.ceil_time_step]          # air temperature (C)
            self.forc.rHum = self.forcIP.rHum[self.ceil_time_step]          # Relative humidity (%)
            self.forc.prec = self.forcIP.prec[self.ceil_time_step]          # Precipitation (mm h-1)
            # horizontal solar diffuse radiation (W m-2)
            self.forc.dif = self.forcIP.dif[self.ceil_time_step]
            # normal solar direct radiation (W m-2)
            self.forc.dir = self.forcIP.dir[self.ceil_time_step]
            # Canyon humidity (absolute) same as rural
            self.UCM.canHum = copy.copy(self.forc.hum)

            # Update solar flux
            self.solar = SolarCalcs(self.UCM, self.BEM, self.simTime,
                                    self.RSM, self.forc, self.geoParam, self.rural)
            self.rural, self.UCM, self.BEM = self.solar.solarcalcs()

            # Update building & traffic schedule
            # Assign day type (1 = weekday, 2 = sat, 3 = sun/other)
            if self.is_near_zero(self.simTime.julian % 7):
                self.dayType = 3                                        # Sunday
            elif self.is_near_zero(self.simTime.julian % 7 - 6.):
                self.dayType = 2                                        # Saturday
            else:
                self.dayType = 1                                        # Weekday

            # Update anthropogenic heat load for each hour (building & UCM)
            self.UCM.sensAnthrop = self.sensAnth * (self.SchTraffic[self.dayType-1][self.simTime.hourDay])

            # Update the energy components for building types defined in initialize.uwg