In this tutorial, we will use an example to show you how to fix TypeError: Object of type ‘ndarray’ is not JSON serializable in python.
Look at example below:
import numpy as np
import json
data= {}
data["vector"] = np.random.random((10,))
print(json.dumps(data))
Run this code, you will get this error:
How to fix this error?
We should convert ndarray to python list. Here is a solution.
data["vector"] = np.random.random((10,)).tolist() print(json.dumps(data))
Run this code, you will get this output:
{"vector": [0.0033196112440357917, 0.6680030275423572, 0.4622229452216984, 0.7155292384011634, 0.6427014520255453, 0.5984720076720726, 0.5005050868254417, 0.8623587301379475, 0.9350345421948418, 0.012840594106745096]}
It means this error is fixed.
To understand more on python object to string, you can read: