python typeerror object of type int64 is not json serializable
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Title: Handling "TypeError: Object of type 'int64' is not JSON serializable" in Python
Introduction:
When working with Python and dealing with JSON serialization, you may encounter the "TypeError: Object of type 'int64' is not JSON serializable." This error occurs when trying to serialize an object containing an int64 type, which is often associated with NumPy arrays or Pandas DataFrame columns. In this tutorial, we will explore the causes of this error and demonstrate how to resolve it with code examples.
Understanding the Error:
The json module in Python is unable to serialize certain non-native data types, and one such type is int64 from NumPy. When attempting to serialize an object containing this type, you'll encounter the mentioned error.
Solution:
To resolve the "TypeError: Object of type 'int64' is not JSON serializable," you can use a custom JSON encoder or convert the problematic data into a JSON-serializable format.
Example 1: Using a Custom JSON Encoder
In this example, we define a custom encoder class (NumpyEncoder) that extends the JSONEncoder class. The default method is overridden to handle np.integer, np.floating, and np.ndarray types.
Example 2: Converting NumPy Int64 to Python Int
In this example, we convert the np.int64 to a native Python int using the int() function and convert the NumPy array to a Python list using the tolist() method.
Conclusion:
Handling the "TypeError: Object of type 'int64' is not JSON serializable" error involves either creating a custom JSON encoder or converting the problematic data to a JSON-serializable format. Choose the approach that best fits your use case and data structures.
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