Python generator/iterator/yield cheat sheet - Tumbler 20oz

Make Python iterables, iterators, generators and yield keyword less confusing by keeping this item on your desk!

Programmers are said to being fuelled by caffeine and just 1 cup of coffee or tea may not be enough. Our vacuum insulated 20 ounce tumbler will help you keep yourself caffeinated with that extra amount your favourite beverage. 

.: Stainless steel makes this item long lasting and corrosion resistant.
.: 20 oz (0.59 l) - almost twice the volume of a regular 11oz coffee mug.
.: See-thru plastic lid will provide visibility into amount of beverage left to consume.
.: Vacuum insulation will keep your hot drink hot and cold drink cold.