How to Iterate over Tuples in Dictionary using Python

In this article, we will learn how to iterate over tuples stored as values in a Python dictionary. Dictionaries can contain tuples as values, and we often need to access and process these tuple elements efficiently.

Methods Used

The following are the various methods used to accomplish this task ?

• Using Direct Indexing

• Using dictionary.values() Method

• Using dictionary.items() Method

Tuples are immutable, ordered collections in Python. Unlike lists, tuples have a fixed length and cannot be modified after creation, making them ideal for storing related data that shouldn't change.

Method 1: Using Direct Indexing

Access specific tuples by their dictionary keys and iterate through elements using indexing or the in operator.

Example

The following program iterates over tuples in a dictionary using direct key access ?

# input dictionary with tuples as values
inputDict = {10: ("Hello", "Tutorialspoint", "Python"),
             20: ("dhoni", "virat", "pandya", "rohit sharma"),
             30: ("this", "is", "a", "dictionary")}

print("The Tuple mapped with key 10:")
print(inputDict[10])
print()

print("Elements of tuple with key 20:")
# iterating through tuple elements using 'in' operator
for element in inputDict[20]:
    print(element)
print()

print("Elements of tuple with key 30:")
# iterating using range() and indexing
for i in range(len(inputDict[30])):
    print(inputDict[30][i])

The Tuple mapped with key 10:
('Hello', 'Tutorialspoint', 'Python')

Elements of tuple with key 20:
dhoni
virat
pandya
rohit sharma

Elements of tuple with key 30:
this
is
a
dictionary

Method 2: Using values() Function

The values() method returns all values (tuples) in the dictionary, allowing you to iterate through each tuple without knowing the keys.

Example

The following program iterates over all tuples using values() ?

# input dictionary containing tuples as values
inputDict = {10: ("Hello", "Tutorialspoint", "Python"),
             20: ("dhoni", "virat", "pandya", "rohit sharma"),
             30: ("this", "is", "a", "dictionary")}

# iterate through all tuples in the dictionary
for tuple_value in inputDict.values():
    # iterate through each element in the current tuple
    for element in tuple_value:
        print(element)
    print()  # blank line between tuples

Hello
Tutorialspoint
Python

dhoni
virat
pandya
rohit sharma

this
is
a
dictionary

Method 3: Using items() Method

The items() method returns key-value pairs, giving you access to both the dictionary key and its corresponding tuple value.

Example

The following program iterates over tuples while also accessing their keys ?

# input dictionary containing tuples as values
inputDict = {10: ("Hello", "Tutorialspoint", "Python"),
             20: ("dhoni", "virat", "pandya", "rohit sharma"),
             30: ("this", "is", "a", "dictionary")}

# iterate through keys and values (tuples) using items()
for key, tuple_value in inputDict.items():
    print(f"Key {key} contains:")
    # iterate through elements of each tuple
    for element in tuple_value:
        print(f"  {element}")
    print()

Key 10 contains:
  Hello
  Tutorialspoint
  Python

Key 20 contains:
  dhoni
  virat
  pandya
  rohit sharma

Key 30 contains:
  this
  is
  a
  dictionary

Comparison

Conclusion

Use values() when you only need tuple contents, items() when you need both keys and tuples, and direct indexing for specific tuple access. Each method offers different levels of control over dictionary iteration.