# dictionaries are hash tables, key:value pairs dict = {'Adam': ['[email protected]', 2445055], 'Bard': '[email protected]'} dict # {'Adam': ['[email protected]', 2445055], 'Bard': '[email protected]'} dict['Adam'] # ['[email protected]', 2445055] dict['Adam'][1] # 2445055 # update value dict['Bard'] = '[email protected]' dict # {'Adam': ['[email protected]', 2445055], 'Bard': '[email protected]'} # add key:value pair dict['Cole'] = '[email protected]' dict # {'Cole': '[email protected]', 'Adam': ['[email protected]', 2445055], 'Bard': '[email protected]'} # remove key:value pair del dict['Cole'] # {'Adam': ['[email protected]', 2445055], 'Bard': '[email protected]'} 'Cole' in dict # False 'Adam' in dict # True # create dictionary from a list of tuples dict_list_tuples = dict([(1, "x"), (2, "y"), (3, "z")]) dict_list_tuples # {1: 'x', 2: 'y', 3: 'z'}