4. 全局变量报错，错误为SyntaxError: identifier redefined as global
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    • 全局变量报错，错误为SyntaxError: identifier redefined as global

    • 6
       

      import sensor, image, time, os, tf, uos, gc, lcd , cpufreq
from pyb import UART,LED,Timer

uart = UART(3, 115200, timeout_char=1000)
u_start=bytearray([0x2C,0x12])
u_over=bytearray([0x5B])
LED(2).on()

sensor.reset()                         # Reset and initialize the sensor.
sensor.set_pixformat(sensor.RGB565)    # Set pixel format to RGB565 (or GRAYSCALE)
sensor.set_framesize(sensor.QQVGA)     # Set frame size to QVGA (320x240)
sensor.set_windowing((240, 240))       # Set 240x240 window.
#sensor.skip_frames(time=2000)          # Let the camera adjust.
lcd.init()
net = None
labels = None
List_score01 = [0]*7

#global List_score01

try:
    # load the model, alloc the model file on the heap if we have at least 64K free after loading
    net = tf.load("trained.tflite", load_to_fb=uos.stat('trained.tflite')[6] > (gc.mem_free() - (64*1024)))
except Exception as e:
    print(e)
    raise Exception('Failed to load "trained.tflite", did you copy the .tflite and labels.txt file onto the mass-storage device? (' + str(e) + ')')

try:
    labels = [line.rstrip('\n') for line in open("labels.txt")]
except Exception as e:
    raise Exception('Failed to load "labels.txt", did you copy the .tflite and labels.txt file onto the mass-storage device? (' + str(e) + ')')

clock = time.clock()

#label = "in","line","out","stop","wandao1","wandao2","word"
#label = "0" ,"1"   ,"2"  ,"3"   ,"4"      ,"5"      ,"6"



while(True):
    #flag=3
    
    number = 1
    clock.tick()
    cpufreq.set_frequency(480)
    img = sensor.snapshot().lens_corr(strength = 1.6, zoom = 1.0)
    global List_score01
    for obj in net.classify(img, min_scale=1.0, scale_mul=0.8, x_overlap=0.5, y_overlap=0.5):
        #
        img.draw_rectangle(obj.rect())
        #print(obj.output())
        predictions_list = list(zip(labels, obj.output()))
        #print(predictions_list)
        #print(predictions_list[0][1])
        print(List_score01)

        if(predictions_list[0][1]>=0.7): #'in'
            List_score01[int(predictions_list[0][0])] += 1
            print(List_score01)
            if List_score01[0]>1:
                while number < 5:  #发送10个"2"
                    uart.write(u_start)
                    uart.write(bytearray([2]))
                    uart.write(u_over)
                    #img.draw_string(0, 0, "flag:%s" %(flag), scale=2, color=(255, 0, 0))
                    print(2)
                    number +=1
                    time.sleep_ms(100)


                number = 1  #number清除再发送"3"
                while number < 10:  #发送"3"
                    uart.write(u_start)
                    uart.write(bytearray([3]))
                    uart.write(u_over)
                    #img.draw_string(0, 0, "flag:%s" %(flag), scale=2, color=(255, 0, 0))
                    print(3)
                    number +=1
                    time.sleep_ms(100)
                List_score01 = [0]*7    #退出初始化循环



        if(predictions_list[3][1]>=0.9): #'stop'
            List_score01[int(predictions_list[3][0])] += 1
            #print(List_score01)
            if List_score01[3]>20:
                while number < 7:  #发送"2"
                    uart.write(u_start)
                    uart.write(bytearray([5]))
                    uart.write(u_over)
                    #img.draw_string(0, 0, "flag:%s" %(flag), scale=2, color=(255, 0, 0))
                    print(5)
                    number +=1
                    time.sleep_ms(100)
                List_score01 = [0]*7
        for i in range(len(predictions_list)):
            print("%s = %f" % (predictions_list[i][0], predictions_list[i][1]))


    #img.draw_string(10,10,str(flag),color=(0,0,255))
    uart_buf = bytearray([3])   
    uart.write(u_start)
    uart.write(uart_buf)
    uart.write(u_over)
    #print(clock.fps(), "fps")
    lcd.display(img)
    
    
def test(timer):
    global List_score01
    List_score01 = [0]*7
    print("11111111")

tim = Timer(4, freq=1)      # 使用定时器2创建定时器对象-以1Hz触发
tim.callback(test)          # 将回调设置为tick函数

      主函数中global List_score01报错

      0

    • while True不是函数，不需要加global

      0