Learn how to read files on Linux using Python 3 on the Raspberry Pi. In this video we take a look at using Python on the Raspberry Pi running Raspbian Linux to read a filter lines from the /etc/hosts file. It is very easy to read the complete file with Python but we would rather filter empty lines and only show IPv4 addresses missing IPv6 addresses. The video steps you through the process and how to encapsulate the code in a Python function.