[Python] String Join

Let's introduce a new string method, join:

>>> nautical_directions = "\n".join(["fore", "aft", "starboard", "port"])

>>> print(nautical_directions)

fore

aft

starboard

port

Also note thatjoin will trigger an error if we try to join anything other than strings. For example:

>>> stuff = ["thing", 42, "nope"]

>>> " and ".join(stuff)

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

TypeError: sequence item 1: expected str instance, int found