json.dumps() from class objects

gistfile1.txt

#!/bin/python
#author class
import json
import simplejson

class Book(object) :
    def __init__(self, name, isbn, price_in_usd) :
        self.name = name
        self.isbn = isbn
        self.price_in_usd = price_in_usd


class Author(object) :
    def __init__(self, name, email, books) :
        self.name = name
        self.email = email
        self.books = books


author = Author(
    name = u"Leslie Lamport",
    email = u"lamport@microsoft.com",
    books = [
        Book(
            name = u"LaTeX: A document preparation system",
            isbn = u"0201529831",
            price_in_usd = 38.01
        ),
        Book(
            name = u"Specifying Systems: The TLA+ Language",
            isbn = u"032114306X",
            price_in_usd = 40.73
        )
    ]
)

def book_to_json(b) :
    data = {
        "name": b.name,
        "isbn": b.isbn,
        "price_in_usd": b.price_in_usd
    }
    return json.dumps(data, indent=2)



author2 = Author(
    name = u"Leslie Lamport",
    email = u"lamport@microsoft.com",
    books = [
        Book(
            name = u"LaTeX: A document preparation system",
            isbn = u"0201529831",
            price_in_usd = 38.01
        ),
        Book(
            name = u"Specifying Systems: The TLA+ Language",
            isbn = u"032114306X",
            price_in_usd = 40.73
        )
    ]
)


def author_to_json(author):
	
	jobject ={
	   "name": author.name ,
	   "email": author.email ,
	   "books" : [book_to_json(book) for book in author.books]

	}

	#list_comp = [to_JSON(book)for book in books]

	

	
	return json.dumps(jobject)

	





print(author_to_json(author2))






Output:
{"books": ["{\n  \"price_in_usd\": 38.01, \n  \"isbn\": \"0201529831\", \n  \"name\": \"LaTeX: A document preparation system\"\n}", "{\n  \"price_in_usd\": 40.73, \n  \"isbn\": \"032114306X\", \n  \"name\": \"Specifying Systems: The TLA+ Language\"\n}"], "name": "Leslie Lamport", "email": "lamport@microsoft.com"}