some polishing

src/sisl/io/orca/stdout.py

@@ -5,8 +5,7 @@
 
 from sisl._internal import set_module
 from sisl.messages import deprecation
-from sisl.unit import serialize_units_arg
-from sisl.unit import units as sunits
+from sisl.unit import serialize_units_arg, unit_convert
 from sisl.utils import PropertyDict
 
 from .._multiple import SileBinder
@@ -267,7 +266,7 @@ def read_energy(self, units="eV"):
         Parameters
         ----------
         units :
-            what energy units the data should be returned in
+            selects units in the returned data
 
         Note
         ----
@@ -285,7 +284,7 @@ def read_energy(self, units="eV"):
         self.readline()  # skip blank line
 
         units = serialize_units_arg(units)
-        Ha2unit = sunits.convert("Ha", units["energy"])
+        Ha2unit = unit_convert("Ha", units["energy"])
 
         E = PropertyDict()
 

src/sisl/io/orca/txt.py

@@ -6,8 +6,7 @@
 from sisl._core.geometry import Geometry
 from sisl._internal import set_module
 from sisl.messages import deprecation
-from sisl.unit import serialize_units_arg
-from sisl.unit import units as sunits
+from sisl.unit import serialize_units_arg, unit_convert
 from sisl.utils import PropertyDict
 
 from .._multiple import SileBinder
@@ -81,8 +80,8 @@ def read_energy(self, units="eV"):
 
         Parameters
         ----------
-        unit :
-            what energy unit the data should be returned in
+        units :
+            selects units in the returned data
 
         Note
         ----
@@ -101,7 +100,7 @@ def read_energy(self, units="eV"):
         self.readline()  # prop. index
 
         units = serialize_units_arg(units)
-        Ha2unit = sunits.convert("Ha", units["energy"])
+        Ha2unit = unit_convert("Ha", units["energy"])
 
         E = PropertyDict()
 
@@ -207,8 +206,8 @@ def read_hyperfine_coupling(self, units="eV"):
 
         Parameters
         ----------
-        unit :
-            what energy unit the data should be returned in
+        units :
+           selects units in the returned data
 
         For a nucleus :math:`k`, the hyperfine interaction is usually
         written in terms of the symmetric :math:`3\times 3` hyperfine
@@ -237,7 +236,7 @@ def read_hyperfine_coupling(self, units="eV"):
             return None
 
         units = serialize_units_arg(units)
-        MHz2unit = sunits.convert("MHz", units["energy"])
+        MHz2unit = unit_convert("MHz", units["energy"])
 
         def read_A():
             A = PropertyDict()