print( boolean literalsa boolean literal can have any of the two valuestrue or false true false true false print(" is"xprint(" is"yprint(" :"aprint(" :"bliteral collections there are four different literal collections list literalstuple literalsdict literalsand set literals =[ , , =( , , ={ , , ={ :' ',' ':' 'print("list:",lprint("tuple:",tprint("set:",sprint("dictionary:",dpython identifiers an identifier is name given to entities like classfunctionsvariablesetc it helps to differentiate one entity from another rules for writing identifiers identifiers can be combination of letters in lowercase ( to zor uppercase ( to zor digits ( to or an underscore an identifier cannot start with digit keywords cannot be used as identifiers we cannot use special symbols like !@#$etc in our identifier keywords keywords are reserved words in python we cannot use keyword as variable namesfunction names and any other identifier they are used to define syntax and structure of python language keywords are case sensitive there are keywords in python