Update Lapsy Code

[laidbackpeter]

Learning-Geospatial-Analysis-with-Python-Third-Edition/Chapter07/B13346_07_04-grid.py

Line 26 in 5f49618

las = File(source, mode="r")

You can install laspy from pypi. This is how you read a file when using laspy 2 and above.
To read a file do:

import lapsy
las = laspy.read('lidar.las')