dictionaries to change [' 'to do ' ']= to add new entry to the dictionarywe can just assign itlike belowd' ']= note that this sort of thing does not work with lists doing [ ]= on list with two elements would produce an index out of range error but it does work with dictionaries to delete an entry from dictionaryuse the del operatordel ' 'empty dictionary 'for strings the empty dictionary is {}which is the dictionary equivalent of [for lists or important note the order of items in dictionary will not necessarily be the order in which put them into the dictionary internallypython rearranges things in dictionary in order to optimize performance dictionary examples example you can use dictionary as an actual dictionary of definitionsd 'dog 'has tail and goes woof''cat 'says meow ''mouse 'chased by cats 'here is an example of the dictionary in useword input'enter word'print'the definition is' [word]enter wordmouse the definition ischased by cats example the following dictionary is useful in program that works with roman numerals numerals ' ': ' ': ' ': ' ': ' ': ' ': ' ': example in the game scrabbleeach letter has point value associated with it we can use the following dictionary for the letter valuespoints ' ': ' ': ' ': ' ': ' ': ' ': ' ': ' ': ' ': ' ': ' ': ' ': ' ': ' ': ' ': ' ': ' ': ' ': ' ': ' ': ' ': ' ': ' ': ' ': ' ': ' ':