“Data processing from web crawlers returning JSON.”

Data returned by web crawlers is typically in the form of raw HTML or JSON format. If the data is in JSON format, we can use Python’s json library to process it.

Firstly, we need to import the json library.

import json

Next, we can utilize the json.loads() method to convert a JSON formatted string into a Python dictionary or list object, for example:

data = '{"name": "John", "age": 30, "city": "New York"}'
json_data = json.loads(data)
print(json_data)

Output result:

{'name': 'John', 'age': 30, 'city': 'New York'}

If the returned string contains multiple JSON objects, you can use the json.loads() method to convert it into a list object. For example:

data = '[{"name": "John", "age": 30, "city": "New York"}, {"name": "Alice", "age": 25, "city": "Los Angeles"}]'
json_data = json.loads(data)
print(json_data)

output results:

[{'name': 'John', 'age': 30, 'city': 'New York'}, {'name': 'Alice', 'age': 25, 'city': 'Los Angeles'}]

Once we convert JSON data into Python dictionary or list objects, we can then use typical Python methods to manipulate this data. For example, we can access values in a dictionary by key, or access elements in a list by index.

I hope the above information is helpful to you!