modules/keyval: cleanup imports

mesonbuild/modules/keyval.py

@@ -12,13 +12,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from . import ExtensionModule
+import os
 
+from . import ExtensionModule
 from .. import mesonlib
-from ..mesonlib import typeslistify
 from ..interpreterbase import FeatureNew, noKwargs, InvalidCode
-
-import os
+from ..mesonlib import typeslistify
 
 class KeyvalModule(ExtensionModule):