How to Access Data from Converted JSON Dictionaries in Python?

Accessing Data in Converted JSON Dictionaries

When attempting to convert a dictionary to JSON, you may encounter difficulties in accessing the data as the converted object is a string.

Consider the following example:

<code class="python">r = {'is_claimed': 'True', 'rating': 3.5}
r = json.dumps(r)
file.write(str(r['rating']))</code>

This code attempts to write the 'rating' field to a file after converting the dictionary to JSON. However, this results in a TypeError: string indices must be integers, not str.

The issue stems from the fact that json.dumps() converts the dictionary into a string representation, not a JSON object. To access the data, you must first load the string back into a dictionary using the json.loads() method.

Think of json.dumps() as a save method and json.loads() as a retrieve method. Here's an updated code sample:

<code class="python">import json

r = {'is_claimed': 'True', 'rating': 3.5}
r = json.dumps(r)
loaded_r = json.loads(r)
loaded_r['rating']  # Output 3.5
type(r)  # Output str
type(loaded_r)  # Output dict</code>

Now, loaded_r is a dictionary, and you can access its fields as expected.

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