There are several useful dictionary methods:
my_dict.clear() - Clears (removes) all items from the dictionary
my_dict.get(key, default) - Gets the value of the specified key. If the key does not exist in the dictionary, then returns default.
my_dict1.update(my_dict2) - Merges dictionary my_dict1 with another dictionary my_dict2. Existing entries with the same key in my_dict1 are overwritten by my_dict2
my_dict.pop(key, default) - Removes and returns the key-value from the dictionary. If key does not exist, then default is returned
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