* 📝 Tweak and improve docs for Request Files. PR [#4470](https://github.com/tiangolo/fastapi/pull/4470) by [@tiangolo](https://github.com/tiangolo).

### Fixes

* 🐛 Fix bug preventing to use OpenAPI when using tuples. PR [#3874](https://github.com/tiangolo/fastapi/pull/3874) by [@victorbenichoux](https://github.com/victorbenichoux).

must contain exactly one single-valued expression, and the left-hand
expression must not be the blank identifier.
</p>

<pre>
a[i] &lt;&lt;= 2
i &amp;^= 1&lt;&lt;n
</pre>

<p>
A tuple assignment assigns the individual elements of a multi-valued
operation to a list of variables.  There are two forms.  In the
first, the right hand operand is a single multi-valued expression

,cAAA,eAEF,SpE69RN,SoE39RQ,eAAA,eAEF,SpE69RN,SoE39RQ,aAAA,eAQF,SAAwB,OAAA,kBACxB,UpEy9RN,UoEv9RQ,WAAA,kBAEF,UpEy9RN,UoEv9RQ,aAAA,kBAEF,UpEy9RN,UoEv9RQ,cAAA,kBAEF,UpEy9RN,UoEv9RQ,YAAA,kBAfF,SAAwB,OAAA,iBACxB,UpE4+RN,UoE1+RQ,WAAA,iBAEF,UpE4+RN,UoE1+RQ,aAAA,iBAEF,UpE4+RN,UoE1+RQ,cAAA,iBAEF,UpE4+RN,UoE1+RQ,YAAA,iBAfF,SAAwB,OAAA,gBACxB,UpE+/RN,UoE7/RQ,WAAA,gBAEF,UpE+/RN,UoE7/RQ,aAAA,gBAEF,UpE+/RN,UoE7/RQ,cAAA,gBAEF,UpE+/RN,UoE7/RQ,YAAA,gBAfF,SAAwB,OAAA,kBACxB,UpEkhSN,UoEhhSQ,WAAA,kBAEF,UpEkhSN,UoEhhS...

must contain exactly one single-valued expression, and the left-hand
expression must not be the blank identifier.
</p>

<pre>
a[i] &lt;&lt;= 2
i &amp;^= 1&lt;&lt;n
</pre>

<p>
A tuple assignment assigns the individual elements of a multi-valued
operation to a list of variables.  There are two forms.  In the
first, the right hand operand is a single multi-valued expression