您可以在[Full Stack FastAPI Template](https://fastapi.tiangolo.com/zh/project-generation/)的模板中找到一个 FastAPI 项目中的 Alembic 示例。具体在[`alembic`代码目录中](https://github.com/tiangolo/full-stack-fastapi-template/tree/master/backend/app/alembic)。

### 创建依赖项

现在使用我们在`sql_app/database.py`文件中创建的`SessionLocal`来创建依赖项。

我们需要每个请求有一个独立的数据库会话/连接（`SessionLocal`），在整个请求中使用相同的会话，然后在请求完成后关闭它。

然后将为下一个请求创建一个新会话。

				"application/vnd.powerbuilder75-s",
				"application/vnd.preminet",
				"application/vnd.previewsystems.box",
				"application/vnd.proteus.magazine",
				"application/vnd.publishare-delta-tree",
				"application/vnd.pvi.ptid1",
				"application/vnd.pwg-multiplexed",
				"application/vnd.pwg-xhtml-print+xml",
				"application/vnd.qualcomm.brew-app-res",
				"application/vnd.quark.quarkxpress",

Examples of valid array, slice, and map literals:
</p>

<pre>
// list of prime numbers
primes := []int{2, 3, 5, 7, 9, 2147483647}

// vowels[ch] is true if ch is a vowel
vowels := [128]bool{'a': true, 'e': true, 'i': true, 'o': true, 'u': true, 'y': true}

// the array [10]float32{-1, 0, 0, 0, -0.1, -0.1, 0, 0, 0, -1}
filter := [10]float32{-1, 4: -0.1, -0.1, 9: -1}

}

// AllHidden returns true are no versions that would show up in a listing (ie all free markers)
// Optionally also return early if top is a delete marker.
func (x xlMetaBuf) AllHidden(topDeleteMarker bool) bool {
	vers, headerV, _, buf, err := decodeXLHeaders(x)
	if err != nil {
		return false
	}
	if vers == 0 {
		return true
	}
	hidden := true

	var xl xlMetaV2VersionHeader

`export MINIO_SERVER_URL="https://minio.example.net"` | Dashboard | Creating a bucket | | ---------- | ---------- | | ![Dashboard](https://github.com/minio/minio/blob/master/docs/screenshots/pic1.png?raw=true) | ![Dashboard](https://github.com/minio/minio/blob/master/docs/screenshots/pic2.png?raw=true) | ## Test using MinIO Client `mc` `mc` provides a modern alternative to UNIX commands like ls, cat, cp, mirror, diff etc. It supports filesystems and Amazon S3 compatible cloud storage services. Follow...

* kube-apiserver: --service-account-lookup now defaults to true, requiring the Secret API object containing the token to exist in order for a service account token to be valid. This enables service account tokens to be revoked...

### Continued improvement of CSI

			dcinfo.Minor = di.Minor
			dcinfo.Total = di.Total
			dcinfo.Free = di.Free
			dcinfo.Used = di.Used
			dcinfo.UsedInodes = di.Files - di.Ffree
			dcinfo.FreeInodes = di.Ffree
			dcinfo.FSType = di.FSType
			if root {
				return dcinfo, errDriveIsRoot
			}

			diskID, err := s.GetDiskID()
			// Healing is 'true' when
			// - if we found an unformatted disk (no 'format.json')

		{
			vol:          newtierfi.Volume,
			name:         newtierfi.Name,
			inclFreeVers: true,
			afterFn:      xl.DeleteVersion,
			expectedFree: false,
		},
		// ToFileInfo with 'inclFreeVers = true' must return the latest free
		// version when no non-free versions are present.
		{
			vol:          newtierfi.Volume,
			name:         newtierfi.Name,
			inclFreeVers: true,

			}
		}
		return freeEntry, true
	}
	return xlMetaV2Version{}, false
}

// FreeVersion returns true if j represents a free-version, false otherwise.
func (j xlMetaV2DeleteMarker) FreeVersion() bool {
	_, ok := j.MetaSys[ReservedMetadataPrefixLower+freeVersion]
	return ok
}

// FreeVersion returns true if j represents a free-version, false otherwise.
func (j xlMetaV2Version) FreeVersion() bool {