Language: C C++ D Haskell Lua OCaml PHP Perl Plain Text Python Ruby Scheme Tcl yrofb={'Bjorn':1940,'Kerstin':1951,'Siri':1980,'Ylva':1982,'Jenny':1953} print yrofb['Kerstin'] print 'Bjorn' in yrofb len(yrofb) items(yrofb) keys = yrofb.viewkeys() values = yrofb.viewvalues() list(keys) list(values) def reverse_index(dict): for p in dict: key, value = value, key return print reverse_index(dictionary) Private [?] Run code