old_dict = {"Pavel":1, "Iulian":2, "Timur":3}

new_dict = dict([(value, key) for key, value in old_dict.items()])

print ("Original dictionary is : ")
print(old_dict)

print()

print ("Dictionary after swapping is :  ")
print("keys: values")
for i in new_dict:
    print(i, " :  ", new_dict[i])