類型錯誤：「浮動對象不可調用的」

Question

爲什麼一個簡單的time.sleep(1)聲明引起：

Type error : 'float' object not callable? 

代碼如下：

try: 
    while True 
     time.sleep(10) 
     current_state = GPIO.input(pir_sensor) 
     if current_state ==1: 
      print "PIR Activated" 
except KeyboardInterrupt: 
    GPIO.cleanup() 

Answer 1

它可能不是因爲time.sleep(10) 論第二行while循環缺少冒號：

try: 
    while True: # <-- Added colon here 
     time.sleep(10) 
     current_state = GPIO.input(pir_sensor) 
     if current_state == 1: 
      print "PIR Activated" 
except KeyboardInterrupt: 
    GPIO.cleanup()