# # The get() method on dicts
# # and its "default" argument
#
# name_for_userid = {
#     382: "Alice",
#     590: "Bob",
#     951: "Dilbert",
# }
#
# def greeting(userid):
#     return "Hi %s!" % name_for_userid.get(userid, "there")
#
# greeting(382)
# # "Hi Alice!"
#
# greeting(333333)
# #"Hi there!"
#
# # ___________________________________________________________________
#
# # How to sort a Python dict by value
# # (== get a representation sorted by value)
#
# xs = {'a': 4, 'b': 3, 'c': 2, 'd': 1}
#
# sorted(xs.items(), key=lambda x: x[1])
# [('d', 1), ('c', 2), ('b', 3), ('a', 4)]
#
# # Or:
#
# import operator
# sorted(xs.items(), key=operator.itemgetter(1))
# [('d', 1), ('c', 2), ('b', 3), ('a', 4)]
#
# # ___________________________________________________________________
#
# # How to merge two dictionaries
# # in Python 3.5+
#
# x = {'a': 1, 'b': 2}
# y = {'b': 3, 'c': 4}
#
# z = {**x, **y}
#
# z
# #{'c': 4, 'a': 1, 'b': 3}
#
# # In Python 2.x you could
# # use this:
# z = dict(x, **y)
# z
# #{'a': 1, 'c': 4, 'b': 3}