def thread_xunji(): #子線程實(shí)現(xiàn)函數(shù)
sum = 0
global num #聲明全局變量
global thread_num #聲明全局變量
while num:
if(GPIO.input(LineL)==0 and GPIO.input(LineR)==0 and
GPIO.input(LineM1)==0 and GPIO.input(LineM2)==0):
sum = sum + 1
print "地板"
if(sum > 100):