/// tip

It's easy to activate one virtual environment, get one Python, and then **go to another project**.

And the second project **wouldn't work** because you are using the **incorrect Python**, from a virtual environment for another project.

It's useful being able to check what `python` is being used. 🤓

///

## Why Deactivate a Virtual Environment { #why-deactivate-a-virtual-environment }

<div class="termy">

```console
$ cd ~/code/prisoner-of-azkaban

// 이전 디렉터리에 있을 필요 없이, 어디서든 가상 환경을 비활성화할 수 있습니다. 다른 프로젝트 디렉터리로 이동한 후에도 괜찮아요 😎
$ deactivate

// prisoner-of-azkaban/.venv 가상 환경을 활성화합니다 🚀
$ source .venv/bin/activate

// 이제 python을 실행하면, 이 가상 환경에 설치된 sirius 패키지를 찾게 됩니다 ✨
$ python main.py

못된 짓을 꾸미고 있음을 엄숙히 맹세합니다.🧙
ImportError는 이제 없습니다. 🐺
```

</div>

    <class java.clone="deep">
      <name>ActivationProperty</name>
      <version>1.0.0+</version>
      <description>
        This is the property specification used to activate a profile. If the value field is empty,
        then the existence of the named property will activate the profile, otherwise it does a case-sensitive
        match against the property value as well.
      </description>
      <fields>
        <field>

    runs-on: ubuntu-latest
    steps:
      - uses: actions/stale@v10
        with:
          operations-per-run: 50
          ascending: true
          exempt-all-milestones: true

          # ISSUES (deactivated) ----------------------------------------------
          # This workflow should touch no issues, so times are set to -1
          # (see actions/stale documentation for the behavior)
          days-before-issue-stale: -1

     */
    @Override
    public void explicitlyDeactivate(String profileId) {
        if (!deactivatedIds.contains(profileId)) {
            logger.debug("Profile with id: '" + profileId + "' has been explicitly deactivated.");

            deactivatedIds.add(profileId);
        }
    }

    /* (non-Javadoc)
     * @see org.apache.maven.profiles.ProfileManager#explicitlyDeactivate(java.util.List)
     */
    @Override

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 python-multipart
```

///

## Import `File` and `Form` { #import-file-and-form }

            boolean reverseName = false;

            if (name == null) {
                throw new ProfileActivationException(
                        "The property name is required to activate the profile '" + profile.getId() + "'");
            }

            if (name.startsWith("!")) {
                reverseName = true;
                name = name.substring(1);
            }

To use `TestClient`, first install <a href="https://www.python-httpx.org" class="external-link" target="_blank">`httpx`</a>.

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 httpx
```

///

Import `TestClient`.

Create a `TestClient` by passing your **FastAPI** application to it.

     */
    @Nonnull
    Optional<Boolean> updateSnapshots();

    /**
     * Returns the list of profiles to activate.
     *
     * @return an {@link Optional} containing the list of profile names to activate, or empty if not specified
     */
    @Nonnull
    Optional<List<String>> activatedProfiles();

    /**
     * Indicates whether Maven should suppress SNAPSHOT updates.

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 python-multipart
```

///

/// note

This is supported since FastAPI version `0.113.0`. 🤓

///