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Learn Dictionary Comprehension with Condition | List and Dictionary Comprehensions
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Dictionary Comprehension with Condition

You can add a condition in a dictionary comprehension to filter items dynamically while creating the dictionary. The syntax for a dictionary comprehension with a condition is:

python
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travel_wishlist = [ ['Paris', 'France', 2000], ['Tokyo', 'Japan', 3000], ['New York', 'USA', 2500], ['Kyoto', 'Japan', 1500], ['Sydney', 'Australia', 4000] ] # Filter destinations within a $2500 budget using a for loop affordable_destinations = {} for city, country, budget in travel_wishlist: if budget <= 2500: # Check if the budget is within the limit affordable_destinations[city] = budget print(affordable_destinations)
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This code iterates through the travel_wishlist list, checking if each destination’s budget is less than or equal to $2500. If the condition is met, the city and its budget are added to the affordable_destinations dictionary.

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travel_wishlist = [ ['Paris', 'France', 2000], ['Tokyo', 'Japan', 3000], ['New York', 'USA', 2500], ['Kyoto', 'Japan', 1500], ['Sydney', 'Australia', 4000] ] # Use dictionary comprehension to filter destinations affordable_destinations = {city: budget for city, country, budget in travel_wishlist if budget <= 2500} print(affordable_destinations) # Output: {'Paris': 2000, 'New York': 2500, 'Kyoto': 1500}
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This example achieves the same result as the previous one but in a more concise and elegant way. The condition if budget <= 2500 filters the destinations based on the budget, and the resulting dictionary includes only the affordable destinations.

Task

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A traveler wants to filter their travel_wishlist to include only destinations in Japan. To achieve this efficiently, you need to extract relevant city-budget pairs into a dictionary.

  • Filter the travel_wishlist to include only destinations where the country is "Japan".
  • Store the resulting dictionary in japan_destinations.

Solution

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SectionΒ 4. ChapterΒ 4

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book
Dictionary Comprehension with Condition

You can add a condition in a dictionary comprehension to filter items dynamically while creating the dictionary. The syntax for a dictionary comprehension with a condition is:

python
12345678910111213141516
travel_wishlist = [ ['Paris', 'France', 2000], ['Tokyo', 'Japan', 3000], ['New York', 'USA', 2500], ['Kyoto', 'Japan', 1500], ['Sydney', 'Australia', 4000] ] # Filter destinations within a $2500 budget using a for loop affordable_destinations = {} for city, country, budget in travel_wishlist: if budget <= 2500: # Check if the budget is within the limit affordable_destinations[city] = budget print(affordable_destinations)
copy

This code iterates through the travel_wishlist list, checking if each destination’s budget is less than or equal to $2500. If the condition is met, the city and its budget are added to the affordable_destinations dictionary.

123456789101112
travel_wishlist = [ ['Paris', 'France', 2000], ['Tokyo', 'Japan', 3000], ['New York', 'USA', 2500], ['Kyoto', 'Japan', 1500], ['Sydney', 'Australia', 4000] ] # Use dictionary comprehension to filter destinations affordable_destinations = {city: budget for city, country, budget in travel_wishlist if budget <= 2500} print(affordable_destinations) # Output: {'Paris': 2000, 'New York': 2500, 'Kyoto': 1500}
copy

This example achieves the same result as the previous one but in a more concise and elegant way. The condition if budget <= 2500 filters the destinations based on the budget, and the resulting dictionary includes only the affordable destinations.

Task

Swipe to start coding

A traveler wants to filter their travel_wishlist to include only destinations in Japan. To achieve this efficiently, you need to extract relevant city-budget pairs into a dictionary.

  • Filter the travel_wishlist to include only destinations where the country is "Japan".
  • Store the resulting dictionary in japan_destinations.

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!

SectionΒ 4. ChapterΒ 4
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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