Make sure you create a [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and then install it, for example:

```console
$ pip install email-validator
```

or with:

```console
$ pip install "pydantic[email]"
```

///

### Install `pydantic-settings`

First, make sure you create your [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and then install the `pydantic-settings` package:

<div class="termy">

```console
$ pip install pydantic-settings
---> 100%
```

</div>

### Virtual environment

Follow the instructions to create and activate a [virtual environment](virtual-environments.md){.internal-link target=_blank} for the internal code of `fastapi`.

### Install requirements using pip

After activating the environment, install the required packages:

	if err != nil {
		return "", fmt.Errorf("failed to create tag webhook: %w", err)
	}

	if opts.Tag == DefaultRevisionName {
		if !opts.Generate {
			// deactivate other istio-injection=enabled injectors if using default revisions.
			err := DeactivateIstioInjectionWebhook(ctx, client.Kube())
			if err != nil {

## Install `SQLModel`

First, make sure you create your [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and then install `sqlmodel`:

<div class="termy">

```console
$ pip install sqlmodel
---> 100%
```

</div>

## Create the App with a Single Model

* <a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> for the data parts.

## Installation

Create and activate a <a href="https://fastapi.tiangolo.com/virtual-environments/" class="external-link" target="_blank">virtual environment</a> and then install FastAPI:

<div class="termy">

```console
$ pip install "fastapi[standard]"

    }

    protected void activateLogging(C context) throws Exception {
        R invokerRequest = context.invokerRequest;
        Options mavenOptions = invokerRequest.options();

        context.slf4jConfiguration.activate();
        org.slf4j.Logger l = context.loggerFactory.getLogger(this.getClass().getName());
        context.logger = (level, message, error) -> l.atLevel(org.slf4j.event.Level.valueOf(level.name()))

* <a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> for the data parts.

## Installation

Create and activate a <a href="https://fastapi.tiangolo.com/virtual-environments/" class="external-link" target="_blank">virtual environment</a> and then install FastAPI:

<div class="termy">

```console
$ pip install "fastapi[standard]"

                          type: object
                      type: object
                    match:
                      description: Match conditions to be satisfied for the rule to
                        be activated.
                      items:
                        properties:
                          authority:
                            description: 'HTTP Authority values are case-sensitive

                System.setErr(ps);
            } catch (FileNotFoundException e) {
                //
                // Ignore
                //
            }
        }

        slf4jConfiguration.activate();

        plexusLoggerManager = new Slf4jLoggerManager();
        slf4jLogger = slf4jLoggerFactory.getLogger(this.getClass().getName());

        if (commandLine.hasOption(CLIManager.FAIL_ON_SEVERITY)) {