# 0202.py

stipendi = {('Rossi','Trento') : 4000,
('Rossi','Roma') : 8000,
('Gardini','Pisa') : 3400}

stipendi[('Neri','Roma')]=4500
stipendi[('Rossi','Roma')]=7400

for x in sorted(stipendi):
  print ('%-s %7s %d' %(x[0],x[1],stipendi[x]))

# Output:

# Gardini Pisa    3400
# Neri    Roma    4500
# Rossi   Roma    7400
# Rossi   Trento  4000