hi whats is wrong with the layer 84 written " time.sleep(length) " : What is the problem by line 84? syntaxerror: time.sleep(length) i got.

what is false?

thanks

time.sleep(length)

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        import time 
        import RPi.GPIO as GPIO 
        GPIO.setmode(GPIO.BCM)

        buzzer_pin = 17
        sensor_pin = 18 

        GPIO.setup(sensor_pin, GPIO.IN)
        GPIO.setup(buzzer_pin, GPIO.IN)
        GPIO.setup(buzzer_pin, GPIO.OUT) 

        notes = {
         'B0' : 31,
         'C1' : 33, 'CS1' : 35,
         'D1' : 37, 'DS1' : 39,
         'EB1' : 39,
         'E1' : 41,
         'F1' : 44, 'FS1' : 46, 
         'G1' : 49, 'GS1' : 52,  
         'A1' : 55, 'AS1' : 58,
         'BB1' : 58,  
         'B1' : 62, 
         'C2' : 65, 'CS2' : 69,
         'D2' : 73, 'DS2' : 78,
         'EB2' : 78,
         'E2' : 82,
         'F2' : 87, 'FS2' : 93,
         'G2' : 98, 'GS2' : 104,
         'A2' : 110, 'AS2' : 117,
         'BB2' : 123,
         'B2' : 123,
         'C3' : 131, 'CS3' : 139,
         'D3' : 147, 'DS3' : 156,
         'EB3' : 156,
         'E3' : 165,
         'F3' : 175, 'FS3' : 185,
         'G3' : 196, 'GS3' : 208,
         'A3' : 220, 'AS3' : 233,
         'BB3' : 233,
         'B3' : 247,
         'C4' : 262, 'CS4' : 277,
         'D4' : 294, 'DS4' : 311,
         'EB4' : 311,
         'E4' : 330,
         'F4' : 349, 'FS4' : 370,
         'G4' : 392, 'GS4' : 415,
         'A4' : 440, 'AS4' : 466,
         'BB4' : 466,
         'B4' : 494,
         'C5' : 523, 'CS5' : 554,
         'D5' : 587, 'DS5' : 622,
         'EB5' : 622,
         'E5' : 659,
         'F5' : 698, 'FS5' : 740,
         'G5' : 784, 'GS5' : 831,
         'A5' : 880, 'AS5' : 932,
         'BB5' : 932,
         'B5' : 988,
         'C6' : 1047, 'CS6' : 1109,
         'D6' : 1175, 'DS6' : 1245,
         'EB6' : 1245,
         'E6' : 1319,
         'F6' : 1397, 'FS6' : 1480,
         'G6' : 1568, 'GS6' : 1661,
         'A6' : 1760, 'AS6' : 1865,
         'BB6' : 1865,
         'B6' : 1976,
         'C7' : 2093, 'CS7' : 2217,
         'D7' : 2349, 'DS7' : 2489,
         'EB7' : 2489,
         'E7' : 2637,
         'F7' : 2794, 'FS7' : 2960,
         'G7' : 3136, 'GS7' : 3322,
         'A7' : 3520, 'AS7' : 3729,
         
         'BB7' : 3729,
         'B7' : 3951,
         'C8' : 4186, 'CS8' : 4435,
         'D8' : 4699, 'DS8' : 4978
        }

        def buzz(frequency, length):

         if(frequency==0):
         time.sleep(length)
         return
         period = 1.0 / frequency
         delayValue = period / 2
         numCycles = int(length * frequency)
 
         for i in range(numCycles):
         GPIO.output(buzzer_pin, True)
         time.sleep(delayValue)
         GPIO.output(buzzer_pin, False)
         time.sleep(delayValue)

        def play():
         buzz(notes['A3'], 0.5)
         buzz(notes['A3'], 0.5)
         buzz(notes['A3'], 0.5)
         buzz(notes['F3'], 0.35)
         buzz(notes['C4'], 0.15)
         buzz(notes['A3'], 0.5)
         buzz(notes['F3'], 0.35)
         buzz(notes['C4'], 0.15)
         buzz(notes['A3'], 1.0)

        while True:
         if GPIO.input(sensor_pin):
         print("Ses Alarmi!")
         play()
         time.sleep(0.5)