Python: Create and display all combinations of letters, selecting each letter from a different key in a dictionary

Last update on March 27 2025 12:57:17 (UTC/GMT +8 hours)

21. Create Combinations of Letters from Dictionary Keys

Write a Python program to create and display all combinations of letters, selecting each letter from a different key in a dictionary.

Visual Presentation:

Sample Solution:

Python Code:

# Import the 'itertools' module, which provides tools for working with iterators and iterable objects.
import itertools

# Create a dictionary 'd' with keys '1' and '2', and associated lists of characters as values.
d = {'1': ['a', 'b'], '2': ['c', 'd']}

# Iterate through combinations of values from the dictionary 'd' using 'itertools.product'.
# The values are sorted based on their keys to ensure a specific order.
for combo in itertools.product(*[d[k] for k in sorted(d.keys())]):
    # Print the combinations as strings by joining the characters in each combination.
    print(''.join(combo))
    

Sample Output:

ac                                                                                                            
ad                                                                                                            
bc                                                                                                            
bd 

For more Practice: Solve these Related Problems:

• Write a Python program to generate all combinations of letters by selecting one letter from each list in a dictionary.
• Write a Python program to use itertools.product to create all letter combinations from a dictionary of lists.
• Write a Python program to recursively combine letters from different keys in a dictionary and print each combination.
• Write a Python program to implement a function that outputs a list of strings formed by all possible combinations of values from a dictionary's keys.

Python Code Editor:

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