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from pydantic import BaseModel, Field, field_validator |
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from typing import List, Union |
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class ContinentStats(BaseModel): |
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continent: str = Field(..., title="Continent Name", example="Asia") |
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Total_Countries: int = Field(..., title="Total Number of Countries", example=48) |
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Total_Population: int = Field(..., title="Total Population", example=4600000000) |
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Average_Population: float = Field(..., title="Average Population Per Country", example=96000000) |
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Total_Area: int = Field(..., title="Total Land Area (sq km)", example=44679000) |
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max_population: int = Field(..., title="Highest Country Population", example=1400000000) |
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min_population: int = Field(..., title="Lowest Country Population", example=100000) |
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Population_Density: float = Field(..., title="Population Density (people/sq km)", example=103) |
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@field_validator("Total_Countries", "Total_Population", "Total_Area", "max_population", "min_population") |
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@classmethod |
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def must_be_positive(cls, value): |
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if value < 0: |
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raise ValueError("Value must be non-negative") |
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return value |
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