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Oppiskele Processing Lists of Data from APIs | Advanced API Usage and Data Processing
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Working with APIs in Python

bookProcessing Lists of Data from APIs

APIs often return lists of data, especially when you request multiple results at once. Instead of a single value, the API response contains an array (or list) of items, such as a list of weather readings, several facts, or multiple images. The Cat Facts API, for example, has an endpoint /facts that returns a list of random cat facts. When you work with APIs like this, you need to know how to handle and process the lists they provide.

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import requests url = "https://catfact.ninja/facts?limit=5" response = requests.get(url) data = response.json() # The 'data' key contains a list of fact dictionaries facts = data["data"] for fact in facts: print(fact["fact"])
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When the API returns a list of facts, you typically receive it as a list of dictionaries in Python after parsing the JSON response. To work with each fact individually, you can use a for loop to iterate through the list and print or process each item. This approach is common whenever you need to handle all items in a list, such as displaying them or performing calculations.

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import requests url = "https://catfact.ninja/facts?limit=5" response = requests.get(url) data = response.json() facts = data["data"] # Count how many facts contain the word 'cat' count = 0 for fact in facts: if "cat" in fact["fact"].lower(): count += 1 print(f"Number of facts containing the word 'cat': {count}")
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Processing and analyzing lists of data from API responses is a crucial skill. Once you have the list, you can filter, count, or transform the items to extract meaningful insights. Whether you want to count facts mentioning a certain word, find the longest weather description, or summarize data, looping through the list allows you to perform these analyses efficiently.

1. Which Python structure is typically used to store a list of items from a JSON API response?

2. What is a common way to process each item in a list returned by an API?

question mark

Which Python structure is typically used to store a list of items from a JSON API response?

Select the correct answer

question mark

What is a common way to process each item in a list returned by an API?

Select the correct answer

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bookProcessing Lists of Data from APIs

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APIs often return lists of data, especially when you request multiple results at once. Instead of a single value, the API response contains an array (or list) of items, such as a list of weather readings, several facts, or multiple images. The Cat Facts API, for example, has an endpoint /facts that returns a list of random cat facts. When you work with APIs like this, you need to know how to handle and process the lists they provide.

1234567891011
import requests url = "https://catfact.ninja/facts?limit=5" response = requests.get(url) data = response.json() # The 'data' key contains a list of fact dictionaries facts = data["data"] for fact in facts: print(fact["fact"])
copy

When the API returns a list of facts, you typically receive it as a list of dictionaries in Python after parsing the JSON response. To work with each fact individually, you can use a for loop to iterate through the list and print or process each item. This approach is common whenever you need to handle all items in a list, such as displaying them or performing calculations.

123456789101112131415
import requests url = "https://catfact.ninja/facts?limit=5" response = requests.get(url) data = response.json() facts = data["data"] # Count how many facts contain the word 'cat' count = 0 for fact in facts: if "cat" in fact["fact"].lower(): count += 1 print(f"Number of facts containing the word 'cat': {count}")
copy

Processing and analyzing lists of data from API responses is a crucial skill. Once you have the list, you can filter, count, or transform the items to extract meaningful insights. Whether you want to count facts mentioning a certain word, find the longest weather description, or summarize data, looping through the list allows you to perform these analyses efficiently.

1. Which Python structure is typically used to store a list of items from a JSON API response?

2. What is a common way to process each item in a list returned by an API?

question mark

Which Python structure is typically used to store a list of items from a JSON API response?

Select the correct answer

question mark

What is a common way to process each item in a list returned by an API?

Select the correct answer

Oliko kaikki selvää?

Miten voimme parantaa sitä?

Kiitos palautteestasi!

Osio 3. Luku 2
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