ImportError: cannot import name 'X ' from ' Y' (Unknown location)

[Arjunpi]

Hello,

I am fairly new to python and I am receiving following error while executing the below python code in IDLE.

Error:
Traceback (most recent call last):
  File "/SunFounder_PiCar-S/example/test_ultrasonic_module.py", line 1, in <module>
    from SunFounder_Ultrasonic_Avoidance import Ultrasonic_Avoidance
ImportError: cannot import name 'Ultrasonic_Avoidance' from 'SunFounder_Ultrasonic_Avoidance' (unknown location)

*****************

from SunFounder_Ultrasonic_Avoidance import Ultrasonic_Avoidance
import time

UA = Ultrasonic_Avoidance.Ultrasonic_Avoidance(20)
threshold = 10

def main():
	distance = UA.get_distance()
	status = UA.less_than(threshold)
	if distance != -1:
		print('distance', distance, 'cm')
		time.sleep(0.2)
	else:
		print(False)
	if status == 1:
		print("Less than %d" % threshold)
	elif status == 0:
		print("Over %d" % threshold)
	else:
		print("Read distance error.")

if __name__=='__main__':
	while True:
		main()

*****************



Appreciate your help.

Thanks
Arjun Pi

[Larz60+]

where did you get package SunFounder_Ultrasonic_Avoidance?
it's not in pypi