Missing symbols from torch._C

Padarn_Wilson: <p>Helo, I am running from pytorch master branch (building from source) and trying to do the following:</p>
<pre><code class="lang-auto">import torch._C._te as te
te.sin
</code></pre>
<p>(this is from the <code>functorch</code> library)</p>
<p>I see that this should be available <a href="https://github.com/pytorch/pytorch/blob/59b28063b414c6184357d58987f66c469a2bbf7e/torch/csrc/jit/tensorexpr/tensorexpr_init.cpp#L105" class="inline-onebox" rel="noopener nofollow ugc">pytorch/tensorexpr_init.cpp at 59b28063b414c6184357d58987f66c469a2bbf7e · pytorch/pytorch · GitHub</a><br>
Any pointers to why it might be missing? The import itself</p>
<pre><code class="lang-auto">import torch._C._te as te
</code></pre>
<p>works okay.</p>

Padarn_Wilson: <p>Sorry I found that was added even more recently than my master branch.</p><aside class="onebox githubpullrequest" data-onebox-src="https://github.com/pytorch/pytorch/pull/66612">
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      <a href="https://github.com/pytorch/pytorch/pull/66612" target="_blank" rel="noopener nofollow ugc">github.com/pytorch/pytorch</a>
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      <a href="https://github.com/pytorch/pytorch/pull/66612" target="_blank" rel="noopener nofollow ugc">[NNC] Adding more python bindings for missing operators</a>
    </h4>

    <div class="branches">
      <code>pytorch:gh/anijain2305/5/base</code> ← <code>pytorch:gh/anijain2305/5/head</code>
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        opened <span class="discourse-local-date" data-format="ll" data-date="2021-10-14" data-time="06:34:14" data-timezone="UTC">06:34AM - 14 Oct 21 UTC</span>
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          anijain2305
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    <p class="github-body-container">Stack from [ghstack](https://github.com/ezyang/ghstack):
* __-&gt;__ #66612

Summar<span class="show-more-container"><a href="https://github.com/pytorch/pytorch/pull/66612" target="_blank" rel="noopener nofollow ugc" class="show-more">…</a></span><span class="excerpt hidden">y: For op authoring project, we want to expose the python bindings
to create Expr. These are the missing bindings.

Test Plan:

Reviewers:

Subscribers:

Tasks:

Tags:

Differential Revision: [D31667852](https://our.internmc.facebook.com/intern/diff/D31667852)</span></p>
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<p>Our of curiosity incase anyone reading know: What is the <code>op authoring project</code> described in the MR?</p>