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#!/usr/bin/python3
"""NXT-Python tutorial: use ultra-sonic sensor."""
import time
import nxt.locator
import nxt.sensor
# Need to import generic sensors for auto-detection to work.
import nxt.sensor.generic
with nxt.locator.find() as b:
# Find the sensor connected to port 4.
mysensor = b.get_sensor(nxt.sensor.Port.S4)
# Read the sensor in a loop (until interrupted).
print("Use Ctrl-C to interrupt")
while True:
distance_cm = mysensor.get_sample()
print(distance_cm)
time.sleep(0.5)
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