Here is how to prettyprint a JSON file in Python.

import json

# Load the JSON data from a file
with open('your_file.json') as file:
    data = json.load(file)

# Pretty print the JSON data
pretty_json = json.dumps(data, indent=4)

# Print or save the pretty printed JSON
print(pretty_json) 

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In this example, you need to replace 'your_file.json' with the path to your actual JSON file. The json.load() function is used to load the JSON data from the file into a Python object. Then, json.dumps() is used to convert the object back to a formatted JSON string with an indentation level of 4. Finally, you can either print the pretty printed JSON or save it to a file as per your requirement.

By specifying the indent parameter in json.dumps(), you can control the number of spaces used for indentation. Setting indent to None or 0 will result in compact JSON without any extra whitespace.

Note that if the JSON file is already loaded into a Python object, you can directly pass that object to json.dumps() instead of loading it from a file.

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