Explanation:
Creating an Empty Dictionary:
- We initialize an empty dictionary named data.
Adding Key-Value Pairs to the Dictionary:
- (2, 3) → 5: A tuple (2, 3) is used as a key, storing the value 5.
- (3, 2) → 10: A different tuple (3, 2) is used as a key, storing the value 10.
(Note: (2, 3) and (3, 2) are different keys because tuples are order-sensitive.) - (1,) → 15: Another tuple (1,) is used as a key, storing the value 15.
Summing All Values in the Dictionary:
- We initialize result = 0.
- We iterate over the dictionary and add each value to result:
- data[(2, 3)] = 5 → result = 0 + 5 = 5
- data[(3, 2)] = 10 → result = 5 + 10 = 15
- data[(1,)] = 15 → result = 15 + 15 = 30
- Final result = 30.
Printing the Output:
- len(data) gives the number of unique keys in the dictionary.
- There are 3 unique keys: (2,3), (3,2), and (1,).
- The final calculation is:
- The program prints 33.
- len(data) gives the number of unique keys in the dictionary.
Final Output:
Key Takeaways:
Tuples as Dictionary Keys:
- Tuples are immutable and can be used as dictionary keys.
- (2, 3) and (3, 2) are different keys because tuple ordering matters.
Dictionary Iteration:
- Iterating over a dictionary gives the keys, which we use to access values.
Using len(data):
- The length of the dictionary is based on unique keys.
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