How to Convert Python List to JSON

John on May 28, 2021

To convert a Python list into JSON format, import the json package and call the dumps() function, passing the list to parse as the first argument.

To demonstrate this, let's change a simple Python list into JSON and print the output.

import json

items = ['a','b','c']

output = json.dumps(items)

print(output)
print(type(output))

["a", "b", "c"]
<class 'str'>

Essentially the operation above converts the list into a string of data.

Convert a List of Dictionaries to JSON

We can convert a list of dictionaries into JSON, using the same method as above.

import json

items = [{'a':1, 'b':2}, {'c':3, 'd':4}]

output = json.dumps(items)

print(output)

[{"a": 1, "b": 2}, {"c": 3, "d": 4}]