Sometimes, we want to load big JSON files in a memory efficient and fast way with Python.
In this article, we’ll look at how to load big JSON files in a memory efficient and fast way with Python.
How to load big JSON files in a memory efficient and fast way with Python?
To load big JSON files in a memory efficient and fast way with Python, we can use the ijson library.
To install it, we run
pip install ijson
Then we use it by writing
import ijson
for prefix, the_type, value in ijson.parse(open(json_file_name)):
print(prefix, the_type, value)
We call ijson.parse to parse the file opened by open.
Then we print the key prefix, data type of the JSON value store in the_type, and the value of the entry with the given key prefix.
Conclusion
To load big JSON files in a memory efficient and fast way with Python, we can use the ijson library.
