Why Am I Getting a 'ValueError: Extra Data' When Loading JSON in Python?

JSON Loading Error: "Extra Data" in Python Json.loads

When attempting to load JSON data from a file using json.loads, you may encounter a "ValueError: Extra data" error. This article identifies the cause of this error and provides a solution.

Causes

This error occurs when there is additional information present in the JSON file after the valid JSON object. This could be irrelevant data, leftover characters from previous operations, or improperly formatted data.

Resolution

The method you used, iteratively parsing the JSON file, attempts to load all lines in one go, leading to the error. The solution lies in iterating over the file and loading each line as JSON within a loop:

tweets = []
with open('tweets.json', 'r') as file:
    for line in file:
        tweets.append(json.loads(line))

By iterating over the file and loading each line as a separate JSON object, you can avoid the "Extra data" error. This method assumes that each line represents a complete JSON object and that the file is properly formatted.

Example

{ "id": 1, "name": "Alice" }
{ "id": 2, "name": "Bob" }
{ "id": 3, "name": "Charlie" }

Each JSON object is on a separate line in this example. Using the aforementioned loop, you can load all three objects without encountering the "Extra data" error.

By following the provided solution, you can avoid the "ValueError: Extra data" error when loading JSON data, allowing you to efficiently process and extract the information you need.

The above is the detailed content of Why Am I Getting a 'ValueError: Extra Data' When Loading JSON in Python?. For more information, please follow other related articles on the PHP Chinese website!