## 結論

讓我們再次回顧之前的句子：

> 現代版本的 Python 支持使用 **"協程"** 的 **`async` 和 `await`** 語法來寫 **"非同步程式碼"**。

現在應該能明白其含意了。✨

這些就是驅動 FastAPI（通過 Starlette）運作的原理，也讓它擁有如此驚人的效能。

## 非常技術性的細節

/// warning

你大概可以跳過這段。

這裡是有關 FastAPI 內部技術細節。

如果你有相當多的技術背景（例如協程、執行緒、阻塞等），並且對 FastAPI 如何處理 `async def` 與常規 `def` 感到好奇，請繼續閱讀。

///

### 路徑操作函数

## 结论

让我们再来回顾下上文所说的：

> Python 的现代版本可以通过使用 `async` 和 `await` 语法创建**协程**，并用于支持**异步代码**。

现在应该能明白其含义了。✨

所有这些使得 FastAPI（通过 Starlette）如此强大，也是它拥有如此令人印象深刻的性能的原因。

## 非常技术性的细节

/// warning

你可以跳过这里。

这些都是 FastAPI 如何在内部工作的技术细节。

如果你有相当多的技术知识（协程、线程、阻塞等），并且对 FastAPI 如何处理 `async def` 与常规 `def` 感到好奇，请继续。

///

### 路径操作函数

	g()
}
</pre>

<p>
it can happen that <code>g</code> prints <code>2</code> and then <code>0</code>.
</p>

<p>
This fact invalidates a few common idioms.
</p>

<p>
Double-checked locking is an attempt to avoid the overhead of synchronization.
For example, the <code>twoprint</code> program might be
incorrectly written as:
</p>

<pre>
var a string
var done bool

func setup() {

for # # bucket [true|false] # versioning: false # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false # - name: bucket2 # policy: none # purge: false # versioning: true # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false ## Additional Annotations for the Kubernetes Job makeBucketJob makeBucketJob: podAnnotations: {} annotations: {} securityContext:...

for # # bucket [true|false] # versioning: false # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false # - name: bucket2 # policy: none # purge: false # versioning: true # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false ## Additional Annotations for the Kubernetes Job makeBucketJob makeBucketJob: securityContext: enabled: false runAsUser: 1000...

for # # bucket [true|false] # versioning: false # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false # - name: bucket2 # policy: none # purge: false # versioning: true # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false ## Additional Annotations for the Kubernetes Job makeBucketJob makeBucketJob: securityContext: enabled: false runAsUser: 1000...

for # # bucket [true|false] # versioning: false # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false # - name: bucket2 # policy: none # purge: false # versioning: true # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false ## Additional Annotations for the Kubernetes Job makeBucketJob makeBucketJob: securityContext: enabled: false runAsUser: 1000...

for # # bucket [true|false] # versioning: false # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false # - name: bucket2 # policy: none # purge: false # versioning: true # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false ## Additional Annotations for the Kubernetes Job makeBucketJob makeBucketJob: securityContext: enabled: false runAsUser: 1000...

for # # bucket [true|false] # versioning: false # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false # - name: bucket2 # policy: none # purge: false # versioning: true # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false ## Additional Annotations for the Kubernetes Job makeBucketJob makeBucketJob: podAnnotations: annotations: securityContext: enabled:...

// See TF_AddGradientsWithPrefix, which provides a means to specify a custom
// name prefix for operations added to a graph to compute the gradients.
//
// WARNING: This function does not yet support all the gradients that python
// supports. See
// https://www.tensorflow.org/code/tensorflow/cc/gradients/README.md
// for instructions on how to add C++ more gradients.