Если вы откроете в браузере URL-адрес, например:

```
http://127.0.0.1:8000/items/foo-item
```

...без добавления обязательного параметра `needy`, вы увидите подобного рода ошибку:

```JSON
{
  "detail": [
    {
      "type": "missing",
      "loc": [
        "query",
        "needy"
      ],
      "msg": "Field required",
      "input": null
    }
  ]
}
```

// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"bytes"
	"context"

// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"fmt"
	"net"
	"strconv"

// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"time"

// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"errors"

// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package mountinfo

import (
	"bufio"
	"fmt"
	"io"

// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package event

import (
	"reflect"
	"testing"
)

// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"bytes"
	"context"
	"errors"

/// tip

你只需要**在每個專案中操作一次**，而不是每次工作時都操作。

///

//// tab | `venv`

你可以使用 Python 自帶的 `venv` 模組來建立一個虛擬環境。

<div class="termy">

```console
$ python -m venv .venv
```

</div>

/// details | 上述命令的含義

* `python`: 使用名為 `python` 的程式
* `-m`: 以腳本的方式呼叫一個模組，我們將告訴它接下來使用哪個模組
* `venv`: 使用名為 `venv` 的模組，這個模組通常隨 Python 一起安裝
* `.venv`: 在新目錄 `.venv` 中建立虛擬環境

///

////

//// tab | `uv`

你只需要 **在每个工程中操作一次**，而不是每次工作时都操作。

///

//// tab | `venv`

你可以使用 Python 自带的 `venv` 模块来创建一个虚拟环境。

<div class="termy">

```console
$ python -m venv .venv
```

</div>

/// details | 上述命令的含义

* `python`: 使用名为 `python` 的程序
* `-m`: 以脚本的方式调用一个模块，我们将告诉它接下来使用哪个模块
* `venv`: 使用名为 `venv` 的模块，这个模块通常随 Python 一起安装
* `.venv`: 在新目录 `.venv` 中创建虚拟环境

///

////

//// tab | `uv`