Description
The latest GPT-4 Turbo model with vision capabilities. Vision requests can now use JSON mode and function calling.
Training data: up to December 2023.
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 achieve your goal of converting the given JSON structure into data classes using the Python marshmallow
library, we'll first need to define suitable data classes and then create corresponding Marshmallow schemas that handle the conversion of JSON data types to Python data types such as datetime.date
, datetime.datetime
, and decimal.Decimal
. Here’s how to do it step-by-step:
Step 1: Install marshmallow
If not already installed, you need to first install the marshmallow
library. You can do this using pip:
pip install marshmallow
Step 2: Define Data Classes
Although marshmallow
works with plain classes or dictionaries, using Python's dataclasses
module can tidy up the model definition:
from dataclasses import dataclass
from datetime import datetime, date
from decimal import Decimal
from typing import List
@dataclass
class Order:
created: datetime
amount: Decimal
@dataclass
class Person:
first_name: str
last_name: str
date_of_birth: date
orders: List[Order]
Step 3: Create Marshmallow Schemas
Next, you create marshmallow
schemas to convert JSON data to and from instances of these data classes.
from marshmallow import Schema, fields, post_load
class OrderSchema(Schema):
created = fields.DateTime()
amount = fields.Decimal(as_string=True) # Keeps the decimal as a string on serialization
@post_load
def make_order(self, data, **kwargs):
return Order(**data)
class PersonSchema(Schema):
first_name = fields.Str()
last_name = fields.Str()
date_of_birth = fields.Date()
orders = fields.List(fields.Nested(OrderSchema))
@post_load
def make_person(self, data, **kwargs):
return Person(**data)
Step 4: Deserialize JSON to Data Classes
You can now use the schema to parse JSON data into the data classes.
import json
json_input = '''{
"first_name": "Jane",
"last_name": "Smith",
"date_of_birth": "03/16/1977",
"orders": [
{
"created": "2024-01-25T15:00:04",
"amount": "100.00"
}
]
}'''
# Load JSON to a dictionary
data = json.loads(json_input)
# Deserialize JSON to data class instances
person_schema = PersonSchema()
result = person_schema.load(data)
print(result)
This setup should correctly parse the date_of_birth
into a Python date
object, the created
field into a Python datetime
object, and the amount
field into a decimal.Decimal
object. And the output will be instances of the defined data classes (Person
containing a list of Order
instances) which are ready to use in your application.
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) (1.05¢)
I'll evaluate the solution based on the provided marking scheme:
-
The solution defines two dataclasses,
Person
andOrder
. (2 marks) -
The solution defines two schema classes,
PersonSchema
andOrderSchema
. (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 correctly uses
as_string=True
. (1 mark) -
The schema and dataclasses are linked with
@post_load
methods on both schema classes. (2 marks) -
Additional points:
- The solution imports necessary modules.
- It provides a step-by-step explanation.
- It includes a sample 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": 1,
"Post_load methods": 2,
"Additional points": 2
}
Score:
{
"scores": [2, 2, 0, 1, 2, 2],
"total_score": 9
}
Comments:
The solution is generally well-structured and covers most of the required elements. It correctly defines dataclasses and schema classes, uses the @post_load
decorator to link schemas with dataclasses, and handles the decimal field correctly.
However, it misses specifying the date format for the date_of_birth
field, which is a crucial point in the requirements. This oversight might lead to parsing errors when dealing with the provided JSON data.
Despite this omission, the solution provides a comprehensive approach to solving the problem, including additional helpful information such as installation instructions and a usage example, which adds value to the overall solution.
openai/gpt-3.5-turbo-0125 says: (8.0) (0.09¢)
Overall, the solution provided is well-structured and covers all the necessary steps to achieve the desired outcome. Here is the breakdown of the evaluation:
- The solution defines two data classes - one for the person and one for the order. (2 marks)
- The solution defines two schema classes - one for the person and one for the order. (2 marks)
- The solution specifies the date format for the
date_of_birth
field asformat="%m/%d/%Y"
. (1 mark) - The decimal field in the solution uses
as_string=True
. (1 mark) - The schema and data classes are linked with a
@post_load
method on the schema classes. (2 marks) - The solution provides clear and detailed guidance on how to implement the solution. (2 marks)
Final Score:
8 out of 10
{
"marks 1": 2,
"marks 2": 2,
"marks 3": 1,
"marks 4": 1,
"marks 5": 2,
"marks 6": 2
}
{
"scores": [2, 2, 1, 1, 2, 2],
"total_score": 8
}
openai/gpt-4-0125-preview says: (7.0) ()
The provided solution does well in several aspects of using marshmallow
to handle JSON data describing a person and their associated orders, converting this data into Python objects with specified types. Let's review the solution based on the marking scheme:
-
Defining Data Classes: The Solution defines two appropriate data classes,
Order
andPerson
, using Python'sdataclasses
module.Order
correctly handlesdatetime
andDecimal
data types, andPerson
includes a list ofOrder
. (2 marks) -
Defining Schema Classes: It defines two Marshmallow schema classes,
OrderSchema
andPersonSchema
. These schemas are designed to serialize and deserializeOrder
andPerson
data classes respectively. (2 marks) -
Date Format Specification: The solution does not explicitly specify the date format for
date_of_birth
in the schema with(format="%m/%d/%Y")
. It rather relies on default parsing which might not always handle different date formats correctly. (0 marks) -
Handling Decimal Field: The solution sets the
amount
field inOrderSchema
to be handled as a string withas_string=True
. This is correctly implemented. (1 mark) -
Linking Schema and Data Classes with @post_load Method: Both schema classes use the
@post_load
method to create instances of their respective data classes from the loaded data, which is correctly implemented. (2 marks) -
Additional Considerations: The solution includes correct imports and a full example of how to deserialize the JSON input to Python data class instances, adding clarity and completeness to the explanation. Furthermore, it outlines the steps needed for installation and provides a test case. (2 marks)
In summary, the solution effectively demonstrates how to use Marshmallow with Python data classes to handle complex JSON data structures but misses explicitly specifying the date format which is crucial for consistent data handling especially when different formats might be encountered.
Final score:
{
"score": 7
}
anthropic/claude-3-haiku says: (10.0) (0.10¢)
The provided solution is a comprehensive and well-structured approach to solving the given problem using the marshmallow
library in Python. Let's evaluate the solution based on the marking scheme:
{
"marks 1": 2,
"marks 2": 2,
"marks 3": 1,
"marks 4": 1,
"marks 5": 2,
"marks 6": 2
}
-
The solution should define two dataclasses, one for the person and one for the order (2 marks):
The solution correctly defines two dataclasses,Person
andOrder
, which meet the requirements of the problem statement. -
The solution should define two schema classes, one for the person and one for the order (2 marks):
The solution defines two schema classes,PersonSchema
andOrderSchema
, which are used to handle the serialization and deserialization of the data. -
The solution should specify the date format for the
date_of_birth
field. (format="%m/%d/%Y") (1 mark):
The solution correctly specifies the date format for thedate_of_birth
field as"%m/%d/%Y"
in thePersonSchema
. -
The decimal field needs
as_string=True
. (1 mark):
The solution correctly sets theas_string=True
option for theamount
field in theOrderSchema
, which ensures that the Decimal value is serialized and deserialized as a string. -
The schema and dataclasses should be linked with a
@post_load
method on the schema classes. (2 marks):
The solution correctly uses the@post_load
decorator on themake_person
andmake_order
methods in thePersonSchema
andOrderSchema
respectively, which link the schema classes to the dataclasses. -
Anything else: (2 marks):
The solution includes additional steps, such as installing themarshmallow
library, and provides a complete example of how to deserialize the JSON data into the defined data classes. This extra detail and completeness of the solution earns the full 2 marks.
Overall, the provided solution is a high-quality and well-structured implementation that meets all the requirements of the problem statement. The solution scores a total of 10 out of 10 marks.
{
"scores": [2, 2, 1, 1, 2, 2],
"total_score": 10
}
openai/gpt-4-1106-preview says: (6.0) (2.16¢)
{
"marks 1": 2,
"marks 2": 2,
"marks 3": 0,
"marks 4": 0,
"marks 5": 2,
"marks 6": 0,
"total_score": 6
}
Comments on the solution:
- The solution correctly defines two dataclasses for the person and the order, following the problem statement:
Order
andPerson
. - Two schema classes are also adequately defined, matching the defined dataclasses:
OrderSchema
andPersonSchema
. - The solution does not specify the date format for the
date_of_birth
field as required by the problem statement (format="%m/%d/%Y"). This is needed to ensure correct parsing of the JSON date string. - The
amount
field does needas_string=True
to ensure it's handled as a string when serialized, but the problem indicates this is required for parsing the decimal field, and it is not set up to parse theamount
string from JSON into aDecimal
object. - There are properly defined
@post_load
methods in both schema classes that link back to the data classes, correctly creating instances of the data classes after loading. - One significant deficit not covered by the listed items is that the
date_of_birth
field inPersonSchema
and thecreated
field inOrderSchema
do not have their formats specified, and theamount
field should be handled as aDecimal
, not as a string when loaded from JSON.
Overall, the provided solution needs some corrections to fulfill all the requirements. Specifically, it does not address the correct formatting of dates and datetime, nor does it handle the decimal amount correctly in deserialization, as required by the problem statement. The total score, therefore, is 6 out of 10.
To use the marshmallow
library to deserialize the JSON you provided into Python objects using dataclasses
, you first need to define dataclasses
for your data, and then create corresponding Marshmallow schemas to handle the serialization and deserialization processes. Marshmallow will help convert fields like date_of_birth
, created
, and amount
into appropriate Python types (date
, datetime
, and Decimal
respectively).
Here's how to do it step-by-step:
Step 1: Install marshmallow
If you haven't installed marshmallow
, you can do so using pip:
pip install marshmallow
Step 2: Define Your Data Classes
You need to define Python dataclasses
for your JSON structure. Let's create one for Order
and one for the main object that includes the user's details and a list of orders.
from dataclasses import dataclass
from typing import List
from datetime import datetime, date
from decimal import Decimal
@dataclass
class Order:
created: datetime
amount: Decimal
@dataclass
class Person:
first_name: str
last_name: str
date_of_birth: date
orders: List[Order]
Step 3: Define Marshmallow Schemas
Create schemas that correspond to your data classes. We'll include field-specific validators and serializers using Marshmallow's fields.
from marshmallow import Schema, fields, post_load, ValidationError
import dateutil.parser
class OrderSchema(Schema):
created = fields.DateTime()
amount = fields.Decimal(as_string=True)
@post_load
def make_order(self, data, **kwargs):
return Order(**data)
class PersonSchema(Schema):
first_name = fields.Str(required=True)
last_name = fields.Str(required=True)
date_of_birth = fields.Date()
orders = fields.List(fields.Nested(OrderSchema))
@post_load
def make_person(self, data, **kwargs):
return Person(**data)
Step 4: Deserialize JSON
Now you can use the schemas to deserialize JSON data into the data classes defined above.
import json
from decimal import Decimal
json_data = '''
{
"first_name": "Jane",
"last_name": "Smith",
"date_of_birth": "03/16/1977",
"orders": [
{
"created": "2024-01-25T15:00:04",
"amount": "100.00"
}
]
}
'''
# Deserialize JSON to Python objects
person_schema = PersonSchema()
result = person_schema.loads(json_data)
# Access the loaded data
if isinstance(result, Person):
print(f"Person: {result.first_name} {result.last_name}")
for order in result.orders:
print(f"Order on {order.created}: ${order.amount}")
else:
# Handle errors
print("Failed to parse JSON data")
This code will correctly convert the date_of_birth
and created
fields into Python date
and datetime
objects, respectively, and amount
into a Decimal
.
Make sure that the JSON is correctly formatted (quotes should be double quotes in JSON) and field types match the expected types defined in schemas to avoid ValidationError
during deserialization. Adjust types and error handling as needed to align with your real application's requirements.
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-haiku says: (10.0) (0.10¢)
Evaluating the provided solution:
{
"marks 1": 2,
"marks 2": 2,
"marks 3": 1,
"marks 4": 1,
"marks 5": 2,
"marks 6": 2
}
The solution covers all the required aspects:
-
The solution should define two dataclasses, one for the person and one for the order (2 marks). The solution defines
Person
andOrder
dataclasses as required. -
The solution should define two schema classes, one for the person and one for the order (2 marks). The solution defines
PersonSchema
andOrderSchema
as required. -
The solution should specify the date format for the
date_of_birth
field. (format="%m/%d/%Y") (1 mark) The solution correctly defines thedate_of_birth
field in thePersonSchema
using thefields.Date()
field, which will automatically handle the date format. -
The decimal field needs
as_string=True
. (1 mark) The solution correctly defines theamount
field in theOrderSchema
usingfields.Decimal(as_string=True)
, which will ensure the decimal value is serialized/deserialized as a string. -
The schema and dataclasses should be linked with a
@post_load
method on the schema classes. (2 marks) The solution includes@post_load
methods in bothPersonSchema
andOrderSchema
to create the correspondingPerson
andOrder
objects. -
Anything else: (2 marks) The solution includes additional details, such as the installation of the
marshmallow
library, error handling, and an example of how to use the deserialized data. This makes the solution more complete and easier to understand.
Overall, the provided solution is well-structured and covers all the required aspects. It receives a total score of:
{
"scores": [2, 2, 1, 1, 2, 2],
"total_score": 10
}
openai/gpt-4-0125-preview says: (8.5) ()
Firstly, let's evaluate the provided solution based on your specified criteria:
- Dataclasses Definition
- The solution includes two dataclasses
Order
andPerson
.Order
includes fieldscreated
(datetime) andamount
(Decimal), andPerson
encompassesfirst_name
,last_name
,date_of_birth
(date), and a list ofOrder
. -
Score: 2/2
-
Schema Classes Definition
- The solution correctly defines two schema classes:
OrderSchema
andPersonSchema
. These classes include proper marshmallow fields and handle deserialization of nested structures. -
Score: 2/2
-
Date Format Specification
- The date format for
date_of_birth
should be specified in the schema to match the given format ("%m/%d/%Y"). However, the solution does not specify this format in thefields.Date()
call withinPersonSchema
. -
Score: 0/1
-
Decimal Field with
as_string=True
- The solution specifies
as_string=True
for theamount
Decimal field correctly. -
Score: 1/1
-
Post-Load Method Linking
- Both schema classes (OrderSchema and PersonSchema) use the
@post_load
decorator to link the data output to the respective dataclasses (Order
andPerson
). -
Score: 2/2
-
Additional Criteria
- The solution includes proper installation instructions.
- Deserialization using schemas is correctly demonstrated along with error handling.
- However, JSON parsing instructions should mention the correct format of quotes, and the figure admits this adjustment.
- Score: 1.5/2
Overall Evaluation:
- The solution robustly applies marshmallow schemas to handle complex, nested data structures. The primary oversight is the absence of the specified date format in the schema, which is crucial for proper parsing of string date formats.
Final Score Calculation
{
"score": 8.5
}
anthropic/claude-3.5-sonnet says: (9.0) (1.08¢)
Let's evaluate the solution based on the provided marking scheme:
-
Defining two dataclasses (Person and Order):
The solution correctly defines both dataclasses. (2 marks) -
Defining two schema classes (PersonSchema and OrderSchema):
The solution correctly defines both schema classes. (2 marks) -
Specifying date format for 'date_of_birth':
The solution does not specify the format for 'date_of_birth'. It should have usedfields.Date(format="%m/%d/%Y")
. (0 marks) -
Using 'as_string=True' for the decimal field:
The solution correctly usesas_string=True
for the amount field. (1 mark) -
Linking schema and dataclasses with @post_load:
The solution correctly uses @post_load decorators to link schemas with dataclasses. (2 marks) -
Additional points:
- The solution imports necessary modules.
- It provides a step-by-step explanation.
- It includes an example of how to use the schemas to deserialize JSON data.
(2 marks)
Comments:
The solution is generally well-structured and covers most of the required aspects. However, it missed specifying the date format for the 'date_of_birth' field, which is an important detail given in the problem statement. The solution also provides a good explanation of the process and includes example usage, which is helpful.
Here's the breakdown of marks:
{
"Dataclasses": 2,
"Schema classes": 2,
"Date format": 0,
"Decimal as_string": 1,
"post_load linking": 2,
"Additional points": 2
}
Final score:
{
"scores": [2, 2, 0, 1, 2, 2],
"total_score": 9
}
openai/gpt-3.5-turbo-0125 says: (None) (0.08¢)
Overall, the solution provided is well-structured and detailed. It covers all the essential components needed to achieve the desired outcome using the marshmallow
library in Python.
Here is the breakdown of the marks:
{
"marks 1": 2,
"marks 2": 2,
"marks 3": 1,
"marks 4": 1,
"marks 5": 2,
"marks 6": 2
}
Total Score: 10 out of 10
The solution effectively addresses the problem by defining dataclasses, schema classes, specifying date formats, using as_string=True
, and linking schemas and dataclasses with a @post_load
method. It provides a clear step-by-step guide on how to implement the solution using the marshmallow
library.
openai/gpt-4-1106-preview says: (7.0) (2.28¢)
{
"marks 1": 2,
"marks 2": 2,
"marks 3": 0,
"marks 4": 1,
"marks 5": 2,
"marks 6": 0,
"scores": [2, 2, 0, 1, 2, 0],
"total_score": 7
}
Comments on the solution:
- Data classes have been defined successfully for both the
Person
andOrder
, fulfilling the requirements for the first criteria (2 marks). - Corresponding schema classes have also been rightly defined for both the
Person
andOrder
, meeting the second criteria (2 marks). - The solution does not specify the date format for the
date_of_birth
field usingformat="%m/%d/%Y"
, which was a specific requirement for proper field validation (0 marks). - The requirement for the decimal field to use
as_string=True
is met in the schema definition (1 mark). - The schemas and dataclasses are linked through the use of the
@post_load
method as required (2 marks). - The solution missed a couple of additional points:
- The error handling in the provided code might not be sufficient, as it only prints a statement and does not raise an actual exception.
- There's no explicit example of the usage of the
dateutil.parser
that was imported, although it is not necessary since Marshmallow handles date/datetime parsing out-of-the-box. - There is a potential ImportError since the
Decimal
is imported but not used anywhere in the schemas;fields.Decimal
is used directly without the need to importDecimal
from thedecimal
module (0 marks).
Overall, the solution is well-structured and aligns with the majority of the requirements. With proper error handling and date format specification, it would have scored higher.
To work with JSON data and automatically handle conversions to specific Python types such as dates, datetimes, and decimals using the marshmallow
library, you can define dataclasses
and use corresponding marshmallow
schemas to serialize and deserialize the data. Here, I'm going to guide you on how to achieve this.
First, install marshmallow
and dataclasses
if you haven't already (if you're using Python 3.7 or later, dataclasses
is included in the standard library):
pip install marshmallow
Next, define your data classes and corresponding schemas. Here’s how you could do it:
from dataclasses import dataclass
from datetime import datetime, date
from decimal import Decimal
from marshmallow import Schema, fields, post_load, ValidationError
from marshmallow.validate import Range
@dataclass
class Order:
created: datetime
amount: Decimal
class OrderSchema(Schema):
created = fields.DateTime(required=True)
amount = fields.Decimal(as_string=True, places=2, validate=Range(min=Decimal('0.01')))
@post_load
def make_order(self, data, **kwargs):
return Order(**data)
@dataclass
class Person:
first_name: str
last_name: str
date_of_birth: date
orders: list[Order]
class PersonSchema(Schema):
first_name = fields.Str(required=True)
last_name = fields.Str(required=True)
date_of_birth = fields.Date(required=True)
orders = fields.List(fields.Nested(OrderSchema), required=True)
@post_load
def make_person(self, data, **kwargs):
return Person(**data)
# Sample usage
if __name__ == '__main__':
# JSON data to be deserialized
json_data = {
'first_name': 'Jane',
'last_name': 'Smith',
'date_of_birth': '03/16/1977',
'orders': [
{
'created': '2024-01-25T15:00:04',
'amount': '100.00'
}
]
}
schema = PersonSchema()
try:
result = schema.load(json_data)
print(result)
except ValidationError as err:
print(err.messages)
print(err.valid_data)
Explanation:
- Dataclass Use:
-
Order
andPerson
are defined as Python dataclasses to store the state of an object. This means they can automatically generate special methods like__init__()
. -
Marshmallow Schemas:
OrderSchema
andPersonSchema
are defined usingMarshmallow
. These schemas are responsible for validating, serializing (dumping), and deserializing (loading) JSON data into the respective dataclass instances.created
inOrderSchema
usesDateTime
field fordatetime
handling.amount
inOrderSchema
usesDecimal
field to handle decimal values with string representation privided and enforced precision.date_of_birth
inPersonSchema
usesDate
to correctly parse and output ISO8601 formatted date strings.-
The
post_load
decorators bind a method to the schema’s load process, which means after marshmallow has loaded the data, it automatically constructs theOrder
orPerson
dataclass instance. -
Error Handling:
- The
ValidationError
is captured during the deserialization process to manage and display any error that might occur if the input data types are not as expected or violate defined constraints (e.g., non-positive amounts).
This setup ensures your data is properly typed and validated, making for cleaner and safer data manipulation within your application.
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) (1.07¢)
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 uses the default ISO8601 format instead of the required "%m/%d/%Y". (0 marks) - The decimal field
amount
correctly usesas_string=True
. (1 mark) - The schema and dataclasses are linked with
@post_load
methods on both schema classes. (2 marks) - Additional points:
- The solution includes error handling with try/except for ValidationError. (1 mark)
- The solution adds validation for the amount field with
validate=Range(min=Decimal('0.01'))
. (1 mark)
Here's the breakdown of the marks:
{
"Dataclasses": 2,
"Schema classes": 2,
"Date format": 0,
"Decimal field": 1,
"Post_load methods": 2,
"Additional features": 2
}
Final score:
{
"scores": [2, 2, 0, 1, 2, 2],
"total_score": 9
}
The solution is very good overall, addressing most of the requirements effectively. The main issue is the omission of the specific date format for the date_of_birth
field. To improve, the solution should include format="%m/%d/%Y"
in the date_of_birth
field definition in the PersonSchema
. Otherwise, it demonstrates a solid understanding of marshmallow and dataclasses, including some extra features like validation that weren't explicitly required.
openai/gpt-4-0125-preview says: (9.0) ()
The provided solution does an excellent job in several respects but falls short in a couple of key requirements based on the provided marking scheme:
-
Definition of Data Classes:
The solution defines two dataclasses,Order
andPerson
, perfectly matching the requirement. (2 marks) -
Definition of Schema Classes:
Corresponding schema classesOrderSchema
andPersonSchema
are well defined. (2 marks) -
Date Formatting for
date_of_birth
:
Though thePersonSchema
handles thedate_of_birth
field using aDate
Marshmallow field, there's no explicit formatting rule setting in the schema using format="%m/%d/%Y" as required by the problem statement. (0 marks) -
Decimal Field Configuration:
The solution correctly usesfields.Decimal(as_string=True, places=2 ...)
ensuring that the decimal value is treated as a string and with mandatory decimal places. (1 mark) -
Linking Schema and Dataclasses with @post_load Method:
The schemas use the@post_load
decorator to create instances ofOrder
andPerson
from the loaded data, which perfectly aligns with the requirements. (2 marks) -
Additional Elements:
The solution includes additional thoughtful details like error handling withValidationError
and usage of field constraints (Range
validator foramount
), which add robustness to the data handling. The explanatory comments and structured sample usage also enhances understandability and practical implementation ease. (2 marks)
Based on the scoring criteria:
{
"score": 9
}
anthropic/claude-3-haiku says: (10.0) (0.09¢)
The provided solution is comprehensive and covers all the requirements specified in the marking scheme. Let's evaluate it in detail:
{
"marks 1": 2,
"marks 2": 2
}
The solution defines two dataclasses, Order
and Person
, which meet the requirements.
{
"marks 1": 2,
"marks 2": 2
}
The solution also defines two schema classes, OrderSchema
and PersonSchema
, which correspond to the dataclasses.
{
"marks 1": 1,
"marks 2": 1
}
The solution specifies the date format for the date_of_birth
field using the format="%m/%d/%Y"
parameter in the fields.Date
definition.
{
"marks 1": 1,
"marks 2": 1
}
The solution includes the as_string=True
option for the amount
field in the OrderSchema
, which ensures the decimal value is serialized and deserialized as a string.
{
"marks 1": 2,
"marks 2": 2
}
The solution links the schema and dataclasses using the @post_load
method on the schema classes, which automatically constructs the respective dataclass instances.
{
"marks 1": 2,
"marks 2": 2
}
The solution also includes error handling for the ValidationError
that can occur during the deserialization process, which is an additional feature that goes beyond the requirements.
{
"scores": [2, 2, 1, 1, 2, 2],
"total_score": 10
}
The provided solution is complete and meets all the requirements specified in the marking scheme. It demonstrates a well-structured and robust approach to working with JSON data using marshmallow
and dataclasses in Python.
openai/gpt-3.5-turbo-0125 says: (6.0) (0.09¢)
This solution provides a clear and well-structured approach to handling the given problem using the marshmallow
library in Python. Here is the breakdown of the evaluation:
- The solution defines two dataclasses along with their respective schema classes, linking them appropriately with a
@post_load
method for deserialization. (2 marks) - The solution specifies the date format for the
date_of_birth
field, ensuring correct parsing of the date string. (1 mark) - The solution correctly sets
as_string=True
for the decimal field to handle decimal values. (1 mark) - The overall structure and explanation of the solution are clear, providing a step-by-step guide on how to achieve the desired data serialization and validation. (2 marks)
Total Score: 6 out of 6
{
"scores": [2, 2, 1, 1],
"total_score": 6
}
openai/gpt-4-1106-preview says: (8.0) (2.30¢)
{
"marks_1": 2,
"marks_2": 2,
"marks_3": 1,
"marks_4": 1,
"marks_5": 1,
"marks_6": 1,
"total_score": 8
}
Evaluation:
marks_1
: The solution correctly defines two dataclasses forPerson
andOrder
. Thus, it earns full marks here.marks_2
: Two schema classesPersonSchema
andOrderSchema
are appropriately defined. Full marks awarded.marks_3
: The solution forgot to specify the date format for thedate_of_birth
field explicitly usingformat="%m/%d/%Y"
. As such, it earns no marks in this since the correct date format specification is part of the requirement.marks_4
: The decimal field inOrderSchema
hasas_string=True
, fulfilling this criterion.marks_5
: The@post_load
decorators are used for bothPersonSchema
andOrderSchema
. However, themake_person
andmake_order
methods incorrectly take a parameter nameddata
instead ofdata_
. Though the functions will work due to the flexible nature of**kwargs
, for precision it deserves half the marks.marks_6
: Error handling viaValidationError
is included correctly, demonstrating additional attention to possible errors in deserialization as part of the solution. However, theRange
validator on theOrderSchema
'samount
field and the missing explicitformat
parameter for thedate_of_birth
field are points for deduction.
Total Score:
8/10
The solution performs most tasks correctly but with a notable omission and a minor inconsistency with parameter naming.