import collections
a_dict = collections.defaultdict(list) # a dictionary key --> list (of any stuff)
a_dict["a"].append("hello")
print(a_dict)
>>> defaultdict(<class 'list'>, {'a': ['hello']})
a_dict["a"].append("kite")
print(a_dict)
>>> defaultdict(<class 'list'>, {'a': ['hello', 'kite']})a_dictionary = {"name" : "John", "age" : 20}
a_list = []
dictionary_copy = a_dictionary.copy()
a_list.append(dictionary_copy)
print(a_list)testing1={'one':1,'two':2}
''' update() is the method of dict() merges another dict into existing ones '''
''' it replaces the keys of exisiting ones with the the new ones '''
testing1.update({'two':3,'noice':69})
print(testing1) """ {'one':1,'two':3,'noice':69} """dict = {1 : 'one', 2 : 'two'}
# Print out the dict
print(dict)
# Add something to it
dict[3] = 'three'
# Print it out to see it has changed
print(dict)>>> d1 = {1: 1, 2: 2}
>>> d2 = {2: 'ha!', 3: 3}
>>> d1.update(d2)
>>> d1
{1: 1, 2: 'ha!', 3: 3}