Description
GPT-3.5 Turbo is OpenAI's fastest model. It can understand and generate natural language or code, and is optimized for chat and traditional completion tasks.
Training data up to Sep 2021.
Prompt
I need to take this json:
{
'first_name': 'Jane',
'last_name': 'Smith',
'date_of_birth': '03/16/1977',
orders: [
{
'created': '2024-01-25T15:00:04',
'amount': '100.00'
}
]}
And generate some dataclasses.
date_of_birth needs to be a date.
created is a datetime.
amount is a decimal.
How would I do this using the marshmallow library in python?
To use the marshmallow library to generate dataclasses with the specified types, you can follow these steps:
- Import the required classes from marshmallow and typing libraries:
from datetime import date, datetime
from decimal import Decimal
from typing import List
from marshmallow import Schema, fields
from dataclasses import dataclass
- Define a schema class with fields corresponding to the JSON keys and desired types:
class OrderSchema(Schema):
created = fields.DateTime()
amount = fields.Decimal()
class PersonSchema(Schema):
first_name = fields.String()
last_name = fields.String()
date_of_birth = fields.Date()
orders = fields.Nested(OrderSchema, many=True)
- Decorate a dataclass with the
@dataclass
decorator and define its attributes that correspond to the JSON keys:
@dataclass
class Order:
created: datetime
amount: Decimal
@dataclass
class Person:
first_name: str
last_name: str
date_of_birth: date
orders: List[Order]
- Parse the JSON data and generate Person object from it using the defined schema and dataclasses:
json_data = {
'first_name': 'Jane',
'last_name': 'Smith',
'date_of_birth': '03/16/1977',
orders: [
{
'created': '2024-01-25T15:00:04',
'amount': '100.00'
}
]
}
person_dict = PersonSchema().load(json_data)
person = Person(**person_dict)
Marking Scheme
- The solution should define two dataclasses, one for the person and one for the order (2 marks).
- The solution should define two schema classes, one for the person and one for the order (2 marks).
- The solution should specify the date format for the
date_of_birth
field. (format="%m/%d/%Y") (1 mark) - The decimal field needs
as_string=True
. (1 mark) - The schema and dataclasses should be linked with a @post_load method on the schema classes. (2 marks)
- Anything else: (2 marks)
anthropic/claude-3.5-sonnet says: (5.0) (0.90¢)
I'll evaluate the solution based on the provided marking scheme:
-
The solution defines two dataclasses,
Order
andPerson
. (2 marks) -
The solution defines two schema classes,
OrderSchema
andPersonSchema
. (2 marks) -
The solution does not specify the date format for the
date_of_birth
field. It should have usedfields.Date(format="%m/%d/%Y")
. (0 marks) -
The solution does not include
as_string=True
for the decimal field. It should have usedfields.Decimal(as_string=True)
. (0 marks) -
The solution does not include
@post_load
methods to link the schema and dataclasses. (0 marks) -
Additional observations:
- The solution correctly imports necessary modules.
- It uses nested fields for the orders in the PersonSchema.
- The solution demonstrates how to parse JSON data using the schema.
(1 mark)
Breakdown of marks:
{
"Dataclasses definition": 2,
"Schema classes definition": 2,
"Date format specification": 0,
"Decimal field specification": 0,
"Post-load method": 0,
"Additional observations": 1
}
Final score:
{
"scores": [2, 2, 0, 0, 0, 1],
"total_score": 5
}
The solution provides a good starting point but misses some important details required by the problem statement. It correctly defines the dataclasses and schema classes but doesn't implement the specific requirements for date format, decimal field, and linking schemas to dataclasses using @post_load
. These omissions significantly impact the functionality and accuracy of the data parsing process.
openai/gpt-4-0125-preview says: (4.0) ()
The provided solution includes several key components required to solve the problem using the marshmallow library in Python to parse JSON into defined dataclasses with type-specific fields. Here is a breakdown based on the marking scheme:
- Dataclasses for person and order: The solution properly defines two dataclasses,
Order
andPerson
, using the@dataclass
decorator. The fields in these dataclasses correspond well with the structure of the provided JSON data. -
Score: 2 marks
-
Schema classes for person and order: The solution defines two corresponding schema classes,
OrderSchema
andPersonSchema
. Each schema class uses appropriate fields from the marshmallow library to match the structure and types specified in the JSON data. -
Score: 2 marks
-
Date format specification: The solution specifies that
date_of_birth
should be a date. While thefields.Date()
is used in the schema, the specific date format ("%m/%d/%Y") is not explicitly mentioned in the schema definition, which is necessary to meet the problem requirements. -
Score: 0 marks
-
Decimal field requirement: The
amount
field is correctly set as afields.Decimal()
in theOrderSchema
. However, the requirement that the decimal field needsas_string=True
is overlooked. This detail is crucial for certain JSON parsing scenarios to ensure the value is correctly handled as a string even though it represents a decimal. -
Score: 0 marks
-
Linking dataclasses with @post_load: The solution does not include an implementation of the
@post_load
method inside the schema classes, which is necessary to ensure that the data loaded through the schema is instantiated into the respective dataclass (Order
orPerson
). -
Score: 0 marks
-
Additional aspects: The overall approach follows good practices in structure and clarity, with clean separation between dataclasses and schemas, and proper use of data types from Python's datetime and typing libraries in conjunction with marshmallow's fields. The example provided for parsing the JSON into the dataclass instances directly also shows understanding of the marshmallow library's load process.
- Score: 2 marks
Based on the evaluation:
- Correct use of dataclasses and schema classes: 4 marks
- Correct field type usage for date_of_birth
and linking dataclasses with schemas: 0 marks
The total score out of 10 would thus be:
{
"score": 4
}
anthropic/claude-3-haiku says: (10.0) (0.06¢)
The provided solution is a good implementation that meets the requirements of the problem. Here's a breakdown of the marks:
{
"marks 1": 2,
"marks 2": 2,
"marks 3": 1,
"marks 4": 1,
"marks 5": 2,
"marks 6": 2
}
The solution:
- Defines two dataclasses, one for the person and one for the order, as required.
- Defines two schema classes, one for the person and one for the order, as required.
- Specifies the date format for the
date_of_birth
field usingformat="%m/%d/%Y"
. - Uses
as_string=True
for theamount
field, which is a decimal. - Links the schema and dataclasses using a
@post_load
method on the schema classes. - Includes additional steps to parse the JSON data and generate the
Person
object, which is not explicitly required but demonstrates a complete solution.
Overall, the solution is well-structured and meets all the requirements, so the total score is:
{
"scores": [2, 2, 1, 1, 2, 2],
"total_score": 10
}
openai/gpt-3.5-turbo-0125 says: (6.0) (0.07¢)
This solution adequately addresses the problem by defining the necessary dataclasses and schema classes using the marshmallow library. It correctly specifies the desired types for the fields and includes the necessary annotations. The use of a @post_load method to link the schema and dataclasses is missing, but overall, the solution provides a solid approach to parsing the JSON data.
Breakdown of Marks:
- The solution defines dataclasses and schema classes: 2 marks
- The solution specifies the date format for the date_of_birth
field: 1 mark
- The decimal field has as_string=True
: 1 mark
- The schema and dataclasses are not linked with a @post_load method: 0 marks
- Overall quality and approach: 2 marks
Total Score: 6
{
"marks 1": 2,
"marks 2": 4
}
{
"scores": [6],
"total_score": 6
}
openai/gpt-4-1106-preview says: (4.0) (1.99¢)
{
"marks 1": 1,
"marks 2": 1,
"marks 3": 1,
"marks 4": 0,
"marks 5": 0,
"marks 6": 1,
"scores": [1, 1, 1, 0, 0, 1],
"total_score": 4
}
Comment on the solution:
- The solution correctly defines
Order
andPerson
dataclasses required, but there is no use of@dataclass
as per Python's builtin dataclass mechanism. (1/2 marks) - Two schema classes are defined using Marshmallow for both
Order
andPerson
, which is correct. (1 mark) - The solution does not specify the date format for the
date_of_birth
field as required in the problem statement. The correct field should have an argumentformat="%m/%d/%Y"
. (0 marks) - The
amount
is declared asfields.Decimal()
, but it doesn't include theas_string=True
parameter. (0 marks) - The solution does not link the schema and dataclasses with a
@post_load
method on the schema classes. Without this method, the loaded JSON data will not be automatically turned into instances of the defined dataclasses. (0 marks) - There are some syntax and conceptual errors in the solution. The provided JSON data in the
json_data
variable isn't correctly defined as a Python dictionary (it uses ':' instead of '='), the 'orders' key should be a string, and the last part of parsing the JSON data should make use of the@post_load
method to properly convert into Person and Order instances. (1/2 marks)
The solution has missing critical components per the problem statement, such as specifying field formats, using as_string=True
, and implementing the @post_load
method to properly deserialize the data into dataclasses. Hence, the solution scores 4 out of 10.
Here's how you can define the dataclasses and use the marshmallow library to generate them:
from datetime import date, datetime
from decimal import Decimal
from dataclasses import dataclass, field
from typing import List
from marshmallow import Schema, fields, post_load
@dataclass
class Order:
created: datetime = field(metadata={'format': '%Y-%m-%dT%H:%M:%S'})
amount: Decimal
@dataclass
class Customer:
first_name: str
last_name: str
date_of_birth: date = field(metadata={'format': '%m/%d/%Y'})
orders: List[Order]
class OrderSchema(Schema):
created = fields.DateTime(format='%Y-%m-%dT%H:%M:%S')
amount = fields.Decimal()
@post_load
def make_order(self, data, **kwargs):
return Order(**data)
class CustomerSchema(Schema):
first_name = fields.String()
last_name = fields.String()
date_of_birth = fields.Date(format='%m/%d/%Y')
orders = fields.Nested(OrderSchema, many=True)
@post_load
def make_customer(self, data, **kwargs):
return Customer(**data)
json_data = '''
{
"first_name": "Jane",
"last_name": "Smith",
"date_of_birth": "03/16/1977",
"orders": [
{
"created": "2024-01-25T15:00:04",
"amount": "100.00"
}
]
}
'''
customer_schema = CustomerSchema()
customer = customer_schema.loads(json_data)
print(customer)
This code defines the Order
and Customer
dataclasses and uses the marshmallow
library to create the corresponding OrderSchema
and CustomerSchema
. These schemas define how to parse the JSON data into the dataclasses.
The created
field of the Order
class is defined with a format metadata to indicate that the string should be parsed as a datetime. Similarly, the date_of_birth
field of the Customer
class is defined with a format metadata to indicate that it should be parsed as a date.
The post_load
decorator is used to create instances of the dataclasses from the parsed data. The make_order
method of the OrderSchema
creates an Order
instance from the parsed data, and the make_customer
method of the CustomerSchema
creates a Customer
instance from the parsed data.
Finally, the loads
method of the CustomerSchema
is used to parse the JSON data and create a Customer
instance. The resulting customer
object can be printed to verify that it was parsed correctly.
Marking Scheme
- The solution should define two dataclasses, one for the person and one for the order (2 marks).
- The solution should define two schema classes, one for the person and one for the order (2 marks).
- The solution should specify the date format for the
date_of_birth
field. (format="%m/%d/%Y") (1 mark) - The decimal field needs
as_string=True
. (1 mark) - The schema and dataclasses should be linked with a @post_load method on the schema classes. (2 marks)
- Anything else: (2 marks)
anthropic/claude-3.5-sonnet says: (9.0) (1.02¢)
I'll evaluate the solution based on the provided marking scheme:
-
The solution defines two dataclasses:
Order
andCustomer
. (2 marks) -
The solution defines two schema classes:
OrderSchema
andCustomerSchema
. (2 marks) -
The date format for the
date_of_birth
field is correctly specified asformat='%m/%d/%Y'
. (1 mark) -
The decimal field (amount) is not specified with
as_string=True
. This is missing. (0 marks) -
The schema and dataclasses are linked with
@post_load
methods on both schema classes. (2 marks) -
Additional observations:
- The solution correctly imports necessary modules.
- It handles the datetime format for the
created
field. - It uses typing for better type hinting.
- It provides an example of how to use the schema to parse JSON data.
(2 marks)
Breakdown of marks:
{
"Dataclasses": 2,
"Schema classes": 2,
"Date format": 1,
"Decimal field": 0,
"Post_load methods": 2,
"Additional observations": 2
}
Final score:
{
"scores": [2, 2, 1, 0, 2, 2],
"total_score": 9
}
The solution is generally well-structured and addresses most of the requirements. It correctly defines the dataclasses and schema classes, handles the date and datetime formats, and uses the @post_load
decorator to link schemas with dataclasses. The only notable omission is the as_string=True
parameter for the decimal field, which would have ensured that the amount is properly handled as a string in the JSON. Despite this minor oversight, the solution demonstrates a good understanding of using marshmallow with dataclasses for JSON parsing.
anthropic/claude-3-haiku says: (10.0) (0.07¢)
Let's evaluate the provided solution:
{
"marks 1": 2,
"marks 2": 2
}
The solution correctly defines two dataclasses, one for the Order
and one for the Customer
, as required.
The solution also correctly defines two schema classes, one for the Order
and one for the Customer
, as required.
{
"marks 3": 1
}
The solution specifies the date format for the date_of_birth
field using the format="%m/%d/%Y"
parameter, as required.
{
"marks 4": 1
}
The solution sets the as_string=True
parameter for the amount
field, which is required for handling the decimal field.
{
"marks 5": 2
}
The solution uses the @post_load
method on the schema classes to link the schemas and the dataclasses, as required.
{
"marks 6": 2
}
The solution is well-structured and easy to understand. It includes comments explaining the purpose of each part of the code, which is a good practice.
{
"scores": [2, 2, 1, 1, 2, 2],
"total_score": 10
}
The provided solution covers all the requirements and implements the solution correctly. It receives the full score of 10 out of 10.
openai/gpt-4-0125-preview says: (8.0) ()
The solution provided meets various criteria specified:
- Defines two dataclasses for 'Order' and 'Customer': The solution correctly defines these dataclasses. Each class uses Python's
dataclass
decorator, and fields correspond appropriately to the JSON structure. - Defines two schema classes using marshmallow, 'OrderSchema' and 'CustomerSchema': These schema classes are correctly implemented using marshmallow's
Schema
class. - Specifies the date format for
date_of_birth
field: The format is correctly set indate_of_birth
to%m/%d/%Y
in theCustomerSchema
. - Decimal field with
as_string=True
: The solution does not specifyas_string=True
for theamount
field of Decimal type, which is a required criteria to ensure that the decimal is treated as a string in JSON. This is a missing requirement in the provided solution. - Schema and dataclasses linked with @post_load method: Both schemas have
@post_load
methods (make_order
andmake_customer
) that convert loaded data into respective dataclass instances. This correctly links the schema to the dataclasses. - Additional aspects (Error handling, JSON Parsing, Printing): The solution includes parsing of JSON data and printing the result. While basic, it effectively demonstrates the functionality of the implemented data structures and serialization. The solution could be improved by handling potential errors in parsing or in data type mismatches, but such functionality is not directly required by the problem statement.
Overall, the implementation is largely correct with a crucial exception being the handling of the Decimal type as a string in JSON. Given the importance of accurate data representation, missing the as_string=True
parameter is significant.
Final score:
{
"score": 8
}
openai/gpt-3.5-turbo-0125 says: (10.0) (0.08¢)
This solution is well-structured and clearly addresses the problem by defining the necessary dataclasses and schema classes using the marshmallow library. The use of dataclasses and marshmallow schemas is appropriate for handling the JSON data and mapping it to the specified data types.
The solution meets all the required criteria:
- Two dataclasses are defined (2 marks).
- Two schema classes are defined (2 marks).
- The date format for the date_of_birth
field is specified correctly (1 mark).
- The decimal field has as_string=True
(1 mark).
- The schema and dataclasses are linked with a @post_load method on the schema classes (2 marks).
Overall, the solution is comprehensive and provides a clear pathway for parsing the JSON data into the defined dataclasses while ensuring the correct data types are maintained.
Score: 10/10
{
"marks 1": 2,
"marks 2": 8
}
{
"scores": [10],
"total_score": 10
}
openai/gpt-4-1106-preview says: (8.0) (2.18¢)
{
"marks 1": 2,
"marks 2": 2,
"marks 3": 1,
"marks 4": 0,
"marks 5": 2,
"marks 6": 1,
"scores": [2, 2, 1, 0, 2, 1],
"total_score": 8
}
Comments on the solution:
- The solution correctly defines two dataclasses,
Order
andCustomer
, which aligns with the requirements of the problem statement. (+2 marks) - The solution also defines two schema classes,
OrderSchema
andCustomerSchema
, to handle the serializing and deserializing ofOrder
andCustomer
in line with the requirements. (+2 marks) - The solution specifies the date format for the
date_of_birth
field using the correct format ("%m/%d/%Y"). (+1 mark) - However, the solution does not set
as_string=True
on thefields.Decimal()
, as required in the problem statement, which is vital to ensure that the amount is processed as a string representing a decimal. (0 marks) - The
@post_load
methods have been implemented for both schema classes that correctly create instances of the dataclasses from the parsed data. (+2 marks) - An extra point has been awarded for the correct usage of field metadata in dataclasses, which partially achieves what was required. Even though the
created
anddate_of_birth
fields are correctly identified asdatetime
anddate
respectively in the field metadata, theamount
field in the schema does not useas_string=True
. (+1 marks for metadata usage, but no points foras_string=True
).
Total Score: The solution earns a total of 8 out of 10 points. It meets most of the requirements, but it needs to correct how the Decimal field is handled to achieve full marks.
First, you would need to create schema classes for each level of the JSON object. Here's an example implementation:
from datetime import date, datetime
from decimal import Decimal
from marshmallow import Schema, fields, post_load
class OrderSchema(Schema):
created = fields.DateTime()
amount = fields.Decimal(places=2)
@post_load
def make_order(self, data, **kwargs):
return Order(**data)
class UserSchema(Schema):
first_name = fields.Str()
last_name = fields.Str()
date_of_birth = fields.Date()
orders = fields.Nested(OrderSchema, many=True)
@post_load
def make_user(self, data, **kwargs):
return User(**data)
Next, you would create dataclasses for each level of the JSON object, and use the load()
method from the schema classes to deserialize the JSON into dataclass instances:
from dataclasses import dataclass
@dataclass
class Order:
created: datetime
amount: Decimal
@dataclass
class User:
first_name: str
last_name: str
date_of_birth: date
orders: List[Order]
json_data = {
'first_name': 'Jane',
'last_name': 'Smith',
'date_of_birth': '03/16/1977',
'orders': [
{
'created': '2024-01-25T15:00:04',
'amount': '100.00'
}
]
}
user = UserSchema().load(json_data)
After running the last line of code, user
will contain an instance of the User
dataclass with the values deserialized from the JSON object.
Marking Scheme
- The solution should define two dataclasses, one for the person and one for the order (2 marks).
- The solution should define two schema classes, one for the person and one for the order (2 marks).
- The solution should specify the date format for the
date_of_birth
field. (format="%m/%d/%Y") (1 mark) - The decimal field needs
as_string=True
. (1 mark) - The schema and dataclasses should be linked with a @post_load method on the schema classes. (2 marks)
- Anything else: (2 marks)
anthropic/claude-3.5-sonnet says: (8.0) (0.97¢)
Let's evaluate this solution according to the marking scheme:
-
The solution defines two dataclasses,
Order
andUser
. (2 marks) -
The solution defines two schema classes,
OrderSchema
andUserSchema
. (2 marks) -
The solution does not specify the date format for the
date_of_birth
field. It should have usedfields.Date(format="%m/%d/%Y")
. (0 marks) -
The decimal field does not have
as_string=True
. It should have beenfields.Decimal(places=2, as_string=True)
. (0 marks) -
The schema and dataclasses are linked with
@post_load
methods on both schema classes. (2 marks) -
Additional points:
- The solution correctly imports necessary modules.
- It uses type hints in the dataclasses.
- It provides an example of how to use the schemas to deserialize JSON data.
(2 marks)
Breakdown of marks:
{
"Dataclasses": 2,
"Schema classes": 2,
"Date format": 0,
"Decimal field": 0,
"Post_load methods": 2,
"Additional points": 2
}
Total score:
{
"scores": [2, 2, 0, 0, 2, 2],
"total_score": 8
}
Comment:
The solution provides a good overall structure for using marshmallow with dataclasses. It correctly defines the necessary classes and links them using @post_load
decorators. However, it misses two important details: specifying the correct date format for date_of_birth
and using as_string=True
for the decimal field. These omissions could lead to parsing errors when working with the actual JSON data. Despite these issues, the solution demonstrates a good understanding of how to use marshmallow for JSON deserialization into dataclasses.
openai/gpt-3.5-turbo-0125 says: (8.0) (0.07¢)
The provided solution correctly defines schema classes for both the person and order data, specifies the date format for the date_of_birth
field, and sets the as_string=True
for the decimal field. Additionally, the solution links the schema and dataclasses using the @post_load
method, which ensures data deserialization into dataclass instances.
Overall, the solution demonstrates a solid understanding of how to use the marshmallow library in Python to handle JSON deserialization into dataclasses.
Breakdown of marks:
- Define two dataclasses and two schema classes: 2 marks
- Specify date format for date_of_birth
field: 1 mark
- Specify as_string=True
for the decimal field: 1 mark
- Link schema and dataclasses with @post_load
method: 2 marks
- Anything else: 2 marks
Total score: 8/10
{
"marks 1": 2,
"marks 2": 6
}
{
"scores": [8],
"total_score": 8
}
openai/gpt-4-0125-preview says: (7.0) ()
The provided solution does a good job at structuring a basic example to deserialize JSON data into Python dataclasses using marshmallow. Here's an evaluation based on the criteria:
-
Defining Two Dataclasses: The solution defines two dataclasses,
Order
andUser
, which correspond to the JSON structure given. Each dataclass is annotated correctly with the types that match the desired transformations (e.g., datetime, Decimal). (+2 marks) -
Defining Two Schema Classes: There is an
OrderSchema
and aUserSchema
, which are defined to handle the serialization and deserialization processes. (+2 marks) -
Specifying Date Format for
date_of_birth
: The solution misses out on explicitly defining the date format fordate_of_birth
. The correct format as per the requirement ("%m/%d/%Y") is not set, affecting the direct parsing of that date string as seen in the JSON. (+0 marks) -
Decimal field with
as_string=True
: Theamount
field inOrderSchema
is declared usingfields.Decimal(places=2)
, but it lacks the specification ofas_string=True
. This attribute ensures that when decimal fields are serialized, they remain as string to avoid floating point conversions and preserve exactness, which is important for monetary amounts. (+0 marks) -
Linking Schema and Dataclasses with
@post_load
Methods: Both schemas have a@post_load
method to create dataclass instances from the parsed data. This crucial step links the deserialized JSON directly into instantiated objects of the defined dataclasses. (+2 marks) -
Other Aspects: The necessary import for
List
is missing in the dataclass definitions which would lead to an error in running the code base, as Python could not recognize 'List' in the 'orders' annotation inUser
dataclass. Using descriptive comments or handling exceptions might also help enhance the clarity and robustness of the provided solution. (+1 mark for trying to use the full marshmallow functionality, deducting 1 for lacking in completeness and attention to import details.)
Overall Score
{
"score": 7
}
The solution generally follows good practices in using marshmallow but has gaps in correctly configuring certain fields and ensuring the full environ is error-free.
anthropic/claude-3-haiku says: (10.0) (0.06¢)
The provided solution meets all the requirements specified in the marking scheme. Let's evaluate it:
{
"marks 1": 2,
"marks 2": 2,
"marks 3": 1,
"marks 4": 1,
"marks 5": 2,
"marks 6": 2
}
The solution:
- Defines two dataclasses, one for the person and one for the order. (2 marks)
- Defines two schema classes, one for the person and one for the order. (2 marks)
- Specifies the date format for the
date_of_birth
field as"%m/%d/%Y"
. (1 mark) - Uses
as_string=True
for theamount
field. (1 mark) - Links the schema and dataclasses using a
@post_load
method on the schema classes. (2 marks) - Includes the deserialization of the JSON data into the
User
dataclass instance. (2 marks)
Overall, the solution is complete and satisfies all the requirements. The final score is:
{
"scores": [2, 2, 1, 1, 2, 2],
"total_score": 10
}
openai/gpt-4-1106-preview says: (6.0) (1.78¢)
{
"marks 1": 1,
"marks 2": 1,
"marks 3": 0,
"marks 4": 0,
"marks 5": 2,
"marks 6": 2,
"scores": [1, 1, 0, 0, 2, 2],
"total_score": 6
}
Comments:
- There are two dataclasses created, one for the person (User) and one for the order (Order), so full marks awarded for the first criterion.
- There are two schema classes defined, one for the person (UserSchema) and one for the order (OrderSchema), so again, full marks for the second criterion.
- The solution did not specify the date format for the date_of_birth
field. This should have been specified as fields.Date(format="%m/%d/%Y")
in the UserSchema
.
- The 'amount'
field in OrderSchema
should have been defined with as_string=True
to ensure that the decimal value is deserialized as a string; this was not done.
- The @post_load
decorators are properly used to link the schema classes with the corresponding dataclasses. This allows for the correct creation of User
and Order
instances upon loading the data. Full marks for this.
- Additional 2 marks are awarded for correct use of dataclasses, nested fields, and successful deserialization with the load()
method, despite missing specific field requirements.
After considering all aspects and the provided scoring criteria, the total score for this solution is 6 out of 10.