How to Loop Through Dictionaries in Python

In Python, dictionaries are versatile data structures that store key-value pairs. When working with dictionaries, it is often necessary to iterate through them. Python provides several methods to loop through dictionary elements efficiently.

Iterating Over Keys

The most basic method of iterating through a dictionary is by looping over its keys using a for loop. This returns each key one at a time.

for key in thisdict:
    print(key)

Accessing Values via Keys

To access corresponding values during the loop, use the key as an index.

for key in thisdict:
    print(thisdict[key])

Using the values() Method

Python’s values() method allows you to directly iterate through all values stored in the dictionary.

for value in thisdict.values():
    print(value)

Using the keys() Method

Although iterating directly over the dictionary yields the same result, the keys() method can also be used explicitly.

for key in thisdict.keys():
    print(key)

Iterating Over Key-Value Pairs

The items() method provides a convenient way to access both keys and values simultaneously, which is particularly useful for comprehensive data processing.

for key, value in thisdict.items():
    print(key, value)

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