How to Extract a Specific Value from a JSON File in Python?

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You can extract a specific value from a JSON file in Python by loading the JSON data from the file into a Python dictionary using json.load() and then navigating through the dictionary to extract the desired value using dictionary indexing or dot notation. Here’s an example:

import json

# Open JSON file for reading
with open('data.json', 'r') as file:
    # Load JSON data from file
    data = json.load(file)

# Extract specific value from the JSON data
value = data["key1"]["key2"]["key3"]  # Replace with the appropriate keys for your JSON structure

# Print extracted value
print("Value:", value)

In this example, we assume that you have a JSON file named data.json that contains the data you want to extract. We use the open() function to open the file for reading and then pass the file object to json.load() to load the JSON data from the file into a Python dictionary called data. We can then use dictionary indexing or dot notation to navigate through the dictionary and extract the specific value we want, using the appropriate keys for your JSON structure.

Note that when extracting values from a JSON file, you should handle exceptions appropriately to account for cases where the specified keys may not exist in the JSON data or the JSON data structure may not be as expected. You can use techniques like dict.get() or dict.setdefault() to provide default values or handle missing keys gracefully. Additionally, it’s important to validate and sanitize any user-provided or untrusted JSON data to prevent security vulnerabilities such as JSON injection attacks.

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