jsonl (json line) example

Vishal Basumatary -

JSONL (JSON Lines) Example

If you're working with large JSON files, you may want to consider using JSONL (JSON Lines) format. JSONL is a file format that stores JSON data as a single JSON object per line. This makes it easy to parse large JSON files one line at a time, rather than loading the entire file into memory.

Example JSONL File

Let's take a look at an example of a JSONL file:


{"name": "John", "age": 30}
{"name": "Jane", "age": 25}
{"name": "Bob", "age": 40}

In this example, each line of the file represents a single JSON object. You can have as many JSON objects in the file as you want, as long as each one is on its own line.

Reading a JSONL File

To read a JSONL file, you can simply read the file line by line and parse each line as a separate JSON object. Here's an example in Python:


import json

with open('example.jsonl', 'r') as f:
    for line in f:
        data = json.loads(line)
        # Do something with the data

In this example, we're using the built-in json library in Python to parse each line as a separate JSON object. We're then free to do whatever we want with the data.

Benefits of Using JSONL

Using JSONL format has several benefits:

  • Reduced memory usage when working with large files
  • Easy to parse data one line at a time
  • Less prone to errors compared to parsing large JSON files

Overall, JSONL is a great format to use when working with large JSON files. It makes it easy to parse and manipulate data without having to load the entire file into memory.