combinations_of_letters.py

# Write a Python program to create and display all combinations of letters, selecting each letter from a different key in a dictionary. Sample data: {'1': ['a','b'], '2': ['c','d']}
import random     
d ={'1':['a','b'], '2':['c','d']}
for combo in random.product(*[d[k] for k in sorted(d.keys())]):
    print(''.join(combo))