* `price` adında zorunlu bir parametre olup olmadığını ve varsa tipinin `float` olup olmadığını kontol edecek.
    * `is_offer` adında opsiyonel bir parametre olup olmadığını ve varsa tipinin `float` olup olmadığını kontol edecek.
    * Bunların hepsi en derin JSON nesnelerinde bile çalışacak.

```Python hl_lines="4  9-12  25-27"
from typing import Union

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    price: float
    is_offer: Union[bool, None] = None


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):

            return null;
        }

        @Override
        public void setSessionId(String sessionId) {
        }

        @Override
        public void setWeight(float weight) {
        }

        @Override
        public float getWeight() {
            return 0.0f;
        }

        @Override
        public void setCreateTime(Long createTime) {
        }

        @Override

      "input": "foo"
    }
  ]
}
```

because the path parameter `item_id` had a value of `"foo"`, which is not an `int`.

The same error would appear if you provided a `float` instead of an `int`, as in: <a href="http://127.0.0.1:8000/items/4.2" class="external-link" target="_blank">http://127.0.0.1:8000/items/4.2</a>

/// check

      "input": "foo"
    }
  ]
}
```

porque el parámetro de path `item_id` tenía un valor de `"foo"`, que no es un `int`.

El mismo error aparecería si proporcionaras un `float` en lugar de un `int`, como en: <a href="http://127.0.0.1:8000/items/4.2" class="external-link" target="_blank">http://127.0.0.1:8000/items/4.2</a>

/// check | Revisa

		{Name: "FLOAT32", DBName: "ffloat32", BindNames: []string{"FLOAT32"}, DataType: schema.Float, Creatable: true, Updatable: true, Readable: true, Size: 32, Tag: `gorm:"column:ffloat32"`},
		{Name: "FLOAT64", DBName: "ffloat64", BindNames: []string{"FLOAT64"}, DataType: schema.Float, Creatable: true, Updatable: true, Readable: true, Size: 64, Tag: `gorm:"column:ffloat64"`},

                            <la:message key="labels.dict_stemmeroverride_title"/>
                        </h1>
                    </div>
                    <div class="col-sm-6">
                        <ol class="breadcrumb float-sm-right">
                            <li class="breadcrumb-item"><la:link href="/admin/dict">
                                <la:message key="labels.dict_list_link"/>
                            </la:link></li>

                            <la:message key="labels.elevate_word_configuration"/>
                        </h1>
                    </div>
                    <div class="col-sm-6">
                        <ol class="breadcrumb float-sm-right">
                            <li class="breadcrumb-item active"><la:link href="/admin/elevateword">
                                <la:message key="labels.elevate_word_link_list"/>

        settings.set(key, value);
        assertEquals(value, settings.getAsLong(key, -1));
    }

    @Test
    public void test_setAndGetAsFloat() {
        String key = "key";
        float value = 0.01F;
        settings.set(key, value);
        assertEquals(value, settings.getAsFloat(key, -1), 0);
    }

    @Test
    public void test_setAndGetAsBoolean() {
        String key = "key";

                            <la:message key="labels.elevate_word_title_details"/>
                        </h1>
                    </div>
                    <div class="col-sm-6">
                        <ol class="breadcrumb float-sm-right">
                            <li class="breadcrumb-item"><la:link href="list">
                                <la:message key="labels.elevate_word_link_list"/>
                            </la:link></li>