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Learn The enumerate() Function | The For Loop
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The enumerate() Function

The enumerate() function is incredibly useful when you need to access both the value and its index in a sequence, such as a list or a string. This allows you to work with items while keeping track of their position in the sequence.

In Python, lists are ordered data structures, meaning each item has a unique index. The enumerate() function makes it easy to retrieve both the index and the value simultaneously.

The syntax for using enumerate() is:

python
  • index: refers to the position of an element in the list. Python uses 0-based indexing, meaning the first element has an index of 0;

  • value: refers to the actual element at a given index.

Let's apply enumerate() to our travel_list to print each city along with its index:

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travel_list = ['Monako', 'Luxemburg', 'Liverpool', 'Barcelona', 'Munchen'] # Printing all cities with their indexes for index, city in enumerate(travel_list): print(str(index) + ' ' + city)
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Task

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You're organizing your travel wishlist and want to add a short label to each country that includes its position in the list.

  • Use the enumerate() function to loop through the list of countries.
  • For each country, create a string that says something like: "Destination 1: France".
  • Store these strings in a new list called travel_rankings.

Solution

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SectionΒ 1. ChapterΒ 6
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book
The enumerate() Function

The enumerate() function is incredibly useful when you need to access both the value and its index in a sequence, such as a list or a string. This allows you to work with items while keeping track of their position in the sequence.

In Python, lists are ordered data structures, meaning each item has a unique index. The enumerate() function makes it easy to retrieve both the index and the value simultaneously.

The syntax for using enumerate() is:

python
  • index: refers to the position of an element in the list. Python uses 0-based indexing, meaning the first element has an index of 0;

  • value: refers to the actual element at a given index.

Let's apply enumerate() to our travel_list to print each city along with its index:

12345
travel_list = ['Monako', 'Luxemburg', 'Liverpool', 'Barcelona', 'Munchen'] # Printing all cities with their indexes for index, city in enumerate(travel_list): print(str(index) + ' ' + city)
copy
Task

Swipe to start coding

You're organizing your travel wishlist and want to add a short label to each country that includes its position in the list.

  • Use the enumerate() function to loop through the list of countries.
  • For each country, create a string that says something like: "Destination 1: France".
  • Store these strings in a new list called travel_rankings.

Solution

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

close

Awesome!

Completion rate improved to 5

Swipe to show menu

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