fixes #350

AnswerDotAI · Aug 11, 2021 · 05a7549 · 05a7549
1 parent 0cbe37e
commit 05a7549
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Showing 3 changed files with 45 additions and 2 deletions.
diff --git a/fastcore/_nbdev.py b/fastcore/_nbdev.py
@@ -124,6 +124,7 @@
          "defaults.cpus": "01_basics.ipynb",
          "add_props": "01_basics.ipynb",
          "typed": "01_basics.ipynb",
+         "exec_new": "01_basics.ipynb",
          "working_directory": "02_foundation.ipynb",
          "add_docs": "02_foundation.ipynb",
          "docs": "02_foundation.ipynb",

diff --git a/fastcore/basics.py b/fastcore/basics.py
@@ -12,7 +12,7 @@
            'nested_idx', 'val2idx', 'uniqueify', 'num_methods', 'rnum_methods', 'inum_methods', 'fastuple', 'arg0',
            'arg1', 'arg2', 'arg3', 'arg4', 'bind', 'mapt', 'map_ex', 'compose', 'maps', 'partialler', 'instantiate',
            'using_attr', 'Self', 'Self', 'copy_func', 'patch_to', 'patch', 'patch_property', 'ImportEnum', 'StrEnum',
-           'str_enum', 'Stateful', 'PrettyString', 'even_mults', 'num_cpus', 'add_props', 'typed']
+           'str_enum', 'Stateful', 'PrettyString', 'even_mults', 'num_cpus', 'add_props', 'typed', 'exec_new']
 
 # Cell
 from .imports import *
@@ -875,4 +875,11 @@ def _f(*args,**kwargs):
         res = f(*args,**kwargs)
         if ret is not None and not isinstance(res,ret): raise _typeerr("return", res, ret)
         return res
-    return functools.update_wrapper(_f, f)
+    return functools.update_wrapper(_f, f)
+
+# Cell
+def exec_new(code):
+    "Execute `code` in a new environment and return it"
+    g = {}
+    exec(code, g)
+    return g
diff --git a/nbs/01_basics.ipynb b/nbs/01_basics.ipynb
@@ -5137,6 +5137,41 @@
     "with ExceptionExpected(TypeError): Foo(1,2, 'a string').test(10)"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "#export\n",
+    "def exec_new(code):\n",
+    "    \"Execute `code` in a new environment and return it\"\n",
+    "    g = {}\n",
+    "    exec(code, g)\n",
+    "    return g"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "1"
+      ]
+     },
+     "execution_count": null,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "g = exec_new('a=1')\n",
+    "g['a']"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},