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master/_modules/torchtnt/utils/prepare_module.html

@@ -719,6 +719,11 @@ <h1>Source code for torchtnt.utils.prepare_module</h1><div class="highlight"><pr
 <span class="sd">    &quot;&quot;&quot;</span>
 
     <span class="k">if</span> <span class="n">strategy</span><span class="p">:</span>
+        <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">strategy</span><span class="p">,</span> <span class="nb">str</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">strategy</span><span class="p">,</span> <span class="n">Strategy</span><span class="p">):</span>
+            <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span>
+                <span class="sa">f</span><span class="s2">&quot;Unknown strategy received: </span><span class="si">{</span><span class="n">strategy</span><span class="si">}</span><span class="s2">. Expect either str or Strategy dataclass&quot;</span>
+            <span class="p">)</span>
+
         <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">strategy</span><span class="p">,</span> <span class="nb">str</span><span class="p">):</span>
             <span class="n">strategy</span> <span class="o">=</span> <span class="n">convert_str_to_strategy</span><span class="p">(</span><span class="n">strategy</span><span class="p">)</span>
         <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">strategy</span><span class="p">,</span> <span class="n">DDPStrategy</span><span class="p">):</span>