hash maps python code example

Example 1: hashmap python

my_dict={'Dave' : '001' , 'Ava': '002' , 'Joe': '003'}
print(my_dict.keys())
print(my_dict.values())
print(my_dict.get('Dave'))

Example 2: hash table in python

# In python they are called dictionarys 
dict = {'Name': 'Zara', 'Age': 7, 'Class': 'First'}

name = dict["Name"] # Zara

Example 3: hash map in python

>>> from collections import ChainMap
>>> dict1 = {'one': 1, 'two': 2}
>>> dict2 = {'three': 3, 'four': 4}
>>> chain = ChainMap(dict1, dict2)

>>> chain
ChainMap({'one': 1, 'two': 2}, {'three': 3, 'four': 4})

# ChainMap searches each collection in the chain
# from left to right until it finds the key (or fails):
>>> chain['three']
3
>>> chain['one']
1
>>> chain['missing']
KeyError: 'missing'