How Do I Parse a JSON Lines File Containing Multiple JSON Objects?

JSON Lines File Parsing: Navigating Multiple JSON Objects

When dealing with JSON files, encountering errors like "Extra data" can be frustrating, especially when the documentation seems dense. However, in this case, the issue lies in the file format itself.

Your file is in JSON Lines format, which consists of individual JSON objects separated by line breaks. This format is not recognized as a valid JSON value because it lacks a top-level structure like a list or object.

To parse a JSON Lines file correctly, you need to iterate over each line and parse each object separately:

import json

data = []
with open('file') as f:
    for line in f:
        data.append(json.loads(line))

Each line in the file is a valid JSON object, and the json.loads() method converts it into a Python dictionary. This approach ensures that you process each object incrementally, saving memory and avoiding any potential errors.

Alternatively, if you have a file with individual JSON objects separated by delimiters, refer to [How do I use the 'json' module to read in one JSON object at a time?](link-to-documentation) for a buffered method to parse them individually.

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