Useful snippets for Google Colaboratory. Free GPU included.

For people who are new or still didn't use it -- Google Colab is Jupyter service with dedicated server(with GPU) that you get free for about 12 hours(after it you need to reinitialize it). So it's good place where you can test your Python scripts, or use it while you are learning Machine Learning & Data Science. First it gives free computation power and even free Nvidia Tesla K80. Don't forget to copy all intensive reading data from Drive to instance to make access faster.