Address integration test failures

fastcore/basics.py

@@ -716,9 +716,11 @@ def nested_attr(o, attr, default=None):
     try:
         for a in attr.split("."):
             if hasattr(o, a): o = getattr(o, a)
+            elif isinstance(o, (list, tuple, dict)) and a.isdigit():o = o[int(a)]
             elif hasattr(o, '__getitem__'): o = o[a]
             else: return default
-    except (AttributeError, KeyError): return default
+    except (AttributeError, KeyError, IndexError, TypeError):
+        return default
     return o
 
 # %% ../nbs/01_basics.ipynb

nbs/01_basics.ipynb

@@ -3903,6 +3903,13 @@
     "test_fail(lambda: only([0,1]), contains='iterable has more than 1 item')"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -3915,12 +3922,28 @@
     "    try:\n",
     "        for a in attr.split(\".\"):\n",
     "            if hasattr(o, a): o = getattr(o, a)\n",
+    "            elif isinstance(o, (list, tuple, dict)) and a.isdigit():o = o[int(a)]\n",
     "            elif hasattr(o, '__getitem__'): o = o[a]\n",
     "            else: return default\n",
-    "    except (AttributeError, KeyError): return default\n",
+    "    except (AttributeError, KeyError, IndexError, TypeError):\n",
+    "        return default\n",
     "    return o"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "class TestObj:\n",
+    "    def __init__(self): self.nested = {'key': [1, 2, {'inner': 'value'}]}\n",
+    "test_obj = TestObj()\n",
+    "\n",
+    "test_eq(nested_attr(test_obj, 'nested.key.2.inner'),'value')\n",
+    "test_eq(nested_attr([1, 2, 3], '1'),2)"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,