change line: `if not x in y`, to `if x not in y`

scripts/Diffraction/isis_powder/polaris.py

@@ -49,7 +49,7 @@ class Polaris(AbstractInst):
         return vanadium_d
 
     def create_total_scattering_pdf(self, **kwargs):
-        if not 'q_lims' in kwargs:
+        if 'q_lims' not in kwargs:
             kwargs['q_lims'] = None
         self._inst_settings.update_attributes(kwargs=kwargs)
         # Generate pdf