Пытаюсь получить любое значение из фала json, к примеру тот же title
Пробовал прочитать json таким способом, выдает ошибку...
from pydantic import BaseModel
with open('data.json') as f:
input_json = json.loads(f.read())
class Book(BaseModel):
isbn_13: int
test = Book.parse_raw(input_json)
print(test)
TypeError Traceback (most recent call last)
/usr/local/lib/python3.7/dist-packages/pydantic/main.cpython-37m-x86_64-linux-gnu.so in pydantic.main.BaseModel.parse_raw()
3 frames
TypeError: the JSON object must be str, bytes or bytearray, not list
During handling of the above exception, another exception occurred:
ValidationError Traceback (most recent call last)
/usr/local/lib/python3.7/dist-packages/pydantic/main.cpython-37m-x86_64-linux-gnu.so in pydantic.main.BaseModel.parse_raw()
ValidationError: 1 validation error for Book
__root__
the JSON object must be str, bytes or bytearray, not list (type=type_error)
Пробовал так, тоже ошибка....
import json
from pydantic import BaseModel
with open('data.json') as f:
input_json = json.loads(f.read())
class Book(BaseModel):
title: str
my_json_str = json.dumps(input_json)
test = Book.parse_raw(my_json_str)
print(test)
ValueError Traceback (most recent call last)
/usr/local/lib/python3.7/dist-packages/pydantic/main.cpython-37m-x86_64-linux-gnu.so in pydantic.main.BaseModel.parse_obj()
ValueError: dictionary update sequence element #0 has length 8; 2 is required
The above exception was the direct cause of the following exception:
ValidationError Traceback (most recent call last)
2 frames
/usr/local/lib/python3.7/dist-packages/pydantic/main.cpython-37m-x86_64-linux-gnu.so in pydantic.main.BaseModel.parse_obj()
ValidationError: 1 validation error for Book
__root__
Book expected dict not list (type=type_error)
Вот сам файл json:
[
{
"title": "Zero to One",
"subtitle": "Notes on Startups, or How to Build the Future",
"author": "Peter Thiel",
"publisher": "Ballantine Books",
"isbn_10": "0753555190",
"isbn_13": "978-0753555194",
"price": 14.29,
"author2": {
"name": "Peter Thiel",
"verified": true
}
},
{
"title": "The Lean Startup",
"subtitle": "How Relentless Change Creates Radically Successful Businesses",
"author": "Eric Ries",
"publisher": "Penguin UK",
"isbn_10": "0670921602",
"isbn_13": "978-0670921607",
"price": 12.96
},
{
"title": "A Promised Land",
"author": "Barack Obama",
"publisher": "Viking UK",
"isbn_10": "0241491517",
"isbn_13": "978-0241491515",
"price": 31.74
},
{
"title": "The Hard Thing about Hard Things",
"subtitle": "Building a Business When There Are No Easy Answers",
"author": "Ben Horowitz",
"publisher": "HarperBusiness",
"isbn_10": "0062273205",
"isbn_13": "978-0062273208",
"price": 15.55
},
{
"title": "Design patterns",
"subtitle": "Elements of reusable object-oriented software",
"author": "Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides",
"publisher": "Addison Wesley",
"isbn_10": "0201633612",
"isbn_13": "978-0201633610",
"price": 50
},
{
"title": "Clean Code",
"subtitle": "A Handbook of Agile Software Craftsmanship",
"author": "Robert Martin",
"publisher": "Financial Times Prentice Hall",
"isbn_10": "0132350882",
"isbn_13": "978-0132350884",
"price": 33.43
}
]
Подскажите, что не так делаю?
