to define list with name as with three elements , and [ , , [ , , brackets can be used for indexing and lookup of elements examplel [ [ , , exampleto lookup the element of list [ brackets can be used to access the individual characters of string or to make string slicing examplelookup the first characters of string str'mumbaistr [ 'mexampleto slice string str [ : 'umbbraces {curly braces are used in python to define set or dictionary examplecreate set with three elements , , { , , type( examplecreate dictionary with two elements with keys'rollnoand 'named {'rollno': 'name':vivek'type( brackets can be used to access the value of dictionary element by specifying the key ['rollno'