Reading from stdin and displaying menu

def readin():
    """Reading from stdin and displaying menu"""

    selection = sys.stdin.readline().strip("\n")
    MyBulbs.bulbs.sort(key=lambda x: x.label or x.mac_addr)
    lov=[ x for x in selection.split(" ") if x != ""]
    if lov:
        if MyBulbs.boi:
            #try:
            if True:
                if int(lov[0]) == 0:
                    MyBulbs.boi=None
                elif int(lov[0]) == 1:
                    if len(lov) >1:
                        MyBulbs.boi.set_power(lov[1].lower() in ["1","on","true"]) 
                        MyBulbs.boi=None
                    else:
                        print("Error: For power you must indicate on or off\n")
                elif int(lov[0]) == 2:
                    if len(lov) >2:
                        try:
                            MyBulbs.boi.set_color([58275,0, 
                                    int(round((float(lov[1])*65365.0)/100.0)),
                                    int(round(float(lov[2])))])
                            
                            MyBulbs.boi=None
                        except:
                            print("Error: For white brightness (0-100) and temperature (2500-9000) must be numbers.\n")
                    else:
                        print("Error: For white you must indicate brightness (0-100) and temperature (2500-9000)\n")
                elif int(lov[0]) == 3:
                    if len(lov) >3:
                        try:
                            MyBulbs.boi.set_color([int(round((float(lov[1])*65535.0)/360.0)),
                                    int(round((float(lov[2])*65535.0)/100.0)),
                                    int(round((float(lov[3])*65535.0)/100.0)),3500])
                            MyBulbs.boi=None
                        except:
                            print("Error: For colour hue (0-360), saturation (0-100) and brightness (0-100)) must be numbers.\n")
                    else:
                        print("Error: For colour you must indicate hue (0-360), saturation (0-100) and brightness (0-100))\n")
                        
                elif int(lov[0]) == 4: 
                    print(MyBulbs.boi.device_characteristics_str("    "))
                    print(MyBulbs.boi.device_product_str("    "))
                    MyBulbs.boi=None
                elif int(lov[0]) == 5: 
                    print(MyBulbs.boi.device_firmware_str("   "))
                    MyBulbs.boi=None
                elif int(lov[0]) == 6: 
                    mypartial=partial(MyBulbs.boi.device_radio_str)
                    MyBulbs.boi.get_wifiinfo(callb=lambda x,y:print("\n"+mypartial(y)))
                    MyBulbs.boi=None
                elif int(lov[0]) == 7: 
                    mypartial=partial(MyBulbs.boi.device_time_str)
                    MyBulbs.boi.get_hostinfo(callb=lambda x,y:print("\n"+mypartial(y)))
                    MyBulbs.boi=None
                elif int(lov[0]) == 8: 
                    if len(lov) >3:
                        try:
                            print ( "Sending {}".format([int(round((float(lov[1])*65535.0)/360.0)),
                                    int(round((float(lov[2])*65535.0)/100.0)),
                                    int(round((float(lov[3])*65535.0)/100.0)),3500]))
                            MyBulbs.boi.set_waveform({"color":[int(round((float(lov[1])*65535.0)/360.0)),
                                                               int(round((float(lov[2])*65535.0)/100.0)),
                                                               int(round((float(lov[3])*65535.0)/100.0)),
                                                               3500],
                                                      "transient":1, "period":100, "cycles":30,
                                                      "skew_ratio":0,"waveform":0})
                            MyBulbs.boi=None
                        except:
                            print("Error: For pulse hue (0-360), saturation (0-100) and brightness (0-100)) must be numbers.\n")
                    else:
                        print("Error: For pulse you must indicate hue (0-360), saturation (0-100) and brightness (0-100))\n")
            #except:
                #print ("\nError: Selection must be a number.\n")  
        else:
            try:
                if int(lov[0]) > 0:
                    if int(lov[0]) <=len(MyBulbs.bulbs):
                        MyBulbs.boi=MyBulbs.bulbs[int(lov[0])-1]
                    else:
                        print("\nError: Not a valid selection.\n")
            
            except:
                print ("\nError: Selection must be a number.\n")
        
    if MyBulbs.boi:
        print("Select Function for {}:".format(MyBulbs.boi.label))
        print("\t[1]\tPower (0 or 1)")
        print("\t[2]\tWhite (Brigthness Temperature)")
        print("\t[3]\tColour (Hue Saturation Brightness)")
        print("\t[4]\tInfo")
        print("\t[5]\tFirmware")
        print("\t[6]\tWifi")
        print("\t[7]\tUptime")
        print("\t[8]\tPulse")
        print("")
        print("\t[0]\tBack to bulb selection")
    else:
        idx=1
        print("Select Bulb:")
        for x in MyBulbs.bulbs:
            print("\t[{}]\t{}".format(idx,x.label or x.mac_addr))
            idx+=1
    print("")
    print("Your choice: ", end='',flush=True)