set { , , , print(set { none none is special data type with single value it is used to signify the absence of value in situation none supports no special operationsand it is neither same as false nor (zeroexample myvar none print(type(myvar)print(myvarnone mapping mapping is an unordered data type in python currentlythere is only one standard mapping data type in python called dictionary (adictionary dictionary in python holds data items in key-value pairs items in dictionary are enclosed in curly brackets dictionaries permit faster access to data every key is separated from its value using colon (:sign the key value pairs of dictionary can be accessed using the key the keys are usually strings and their values can be any data type in order to access any value in the dictionarywe have to specify its key in square brackets example #create dictionary dict {'fruit':'apple''climate':'cold''price(kg)': print(dict {'fruit''apple''climate''cold''price(kg)' print(dict ['price(kg)'] mutable and immutable data types sometimes we may require to change or update the values of certain variables used in program howeverfor certain data typespython does not allow us to -