向python变量添加元数据(注释)

class MyClass:
    """This is a sample class."""

    def __init__(self):
        self.my_variable = 42  # This is my variable

# 访问文档字符串
print(MyClass.__doc__)

my_variable = 42  # This is a comment

class MyClass:
    def __init__(self):
        self.my_variable = 42

# 创建对象并添加自定义属性
obj = MyClass()
obj.my_variable_metadata = "This is metadata for my_variable"

print(obj.my_variable_metadata)

metadata = {
    'my_variable': {
        'description': 'This is my variable',
        'type': 'integer',
        'value': 42
    }
}

print(metadata['my_variable']['description'])

from dataclasses import dataclass, field

@dataclass
class MyClass:
    my_variable: int = field(default=42, metadata={'description': 'This is my variable'})

obj = MyClass()
print(obj.my_variable)
print(obj.__dataclass_fields__['my_variable'].metadata)

from pydantic import BaseModel, Field

class MyClass(BaseModel):
    my_variable: int = Field(42, description="This is my variable")

obj = MyClass()
print(obj.my_variable)
print(obj.__fields__['my_variable'].field_info.description)