fixes #267

fastcore/basics.py

@@ -297,7 +297,7 @@ def store_attr(names=None, self=None, but='', cast=False, store_args=None, **att
     if store_args and not hasattr(self, '__stored_args__'): self.__stored_args__ = {}
     anno = annotations(self) if cast else {}
     if names and isinstance(names,str): names = re.split(', *', names)
-    ns = names if names else getattr(self, '__slots__', args[1:])
+    ns = names if names is not None else getattr(self, '__slots__', args[1:])
     added = {n:fr.f_locals[n] for n in ns}
     attrs = {**attrs, **added}
     if isinstance(but,str): but = re.split(', *', but)

nbs/01_basics.ipynb

@@ -1606,7 +1606,7 @@
     "    if store_args and not hasattr(self, '__stored_args__'): self.__stored_args__ = {}\n",
     "    anno = annotations(self) if cast else {}\n",
     "    if names and isinstance(names,str): names = re.split(', *', names)\n",
-    "    ns = names if names else getattr(self, '__slots__', args[1:])\n",
+    "    ns = names if names is not None else getattr(self, '__slots__', args[1:])\n",
     "    added = {n:fr.f_locals[n] for n in ns}\n",
     "    attrs = {**attrs, **added}\n",
     "    if isinstance(but,str): but = re.split(', *', but)\n",
@@ -1847,6 +1847,24 @@
     "assert t.a==1 and t.b==3 and t.c==2 and t.d==4 and t.e==-1"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "#hide\n",
+    "#ensure that kwargs work with names==''\n",
+    "class T:\n",
+    "    def __init__(self, a, **kwargs):\n",
+    "        self.a = a+1\n",
+    "        store_attr('', **kwargs)\n",
+    "\n",
+    "t = T(a=1, d=4)\n",
+    "test_eq(t.a, 2)\n",
+    "test_eq(t.d, 4)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},