Hands on: A common generators pattern

[pberkes]

In the file 2_common_pattern.py [1], write a generator called without_punctuation that iterates over a list of strings and removes punctuation characters at the end of the string. If the string is empty after the removal, the string is skipped.

For instance, without_punctuation(['Apple', 'Banana...', 'Carrot!!', '*$', '!Dinosaur']) would yield Apple, Banana, Carrot, and !Dinosaur.

(see the .rstrip method of strings, and the constant punctuation in the module string)

[1] https://github.com/ASPP/2019-camerino-advanced-python/tree/master/notebook/generators/hands_on