tel={'Jack':4098, 'Sape':4139} #create a dict tel['Bob']=4127 #add a new data print(tel) del tel['Sape'] #delete Sape tel['Ann']=4127 #add a new data print(tel) print(list(tel.keys())) #print tel keys 'names' print(sorted(tel.keys())) #print tel keys 'names' alphabetically print('Bob' in tel) print('Jack' not in tel)