try.py

# First import the library
import pyrealsense2 as rs

try:
    # Create a context object. This object owns the handles to all connected realsense devices
    pipeline = rs.pipeline()
    pipeline.start()

    while True:
        # Create a pipeline object. This object configures the streaming camera and owns it's handle
        frames = pipeline.wait_for_frames()
        depth = frames.get_depth_frame()
        if not depth: 
            continue

        # Print a simple text-based representation of the image, by breaking it into 10x20 pixel regions and approximating the coverage of pixels within one meter
        coverage = [0]*64
        # for y in xrange(480):
        #     for x in xrange(640):
        #         dist = depth.get_distance(x, y)
        #         if 0 < dist and dist < 1:
        #             coverage[x/10] += 1

        #     if y%20 is 19:
        #         line = ""
        #         for c in coverage:
        #             line += " .:nhBXWW"[c/25]
        #         coverage = [0]*64
        #         print(line)
        dist = depth.get_distance(320, 240)
        print(dist)

except Exception as e:
    print(e)