cleanup customtext

bifacial_radiance/main.py

@@ -2267,7 +2267,8 @@ def appendtoScene(self, radfile=None, customObject=None):
         radfile: str
             Directory and name of where .rad scene file is stored
         customObject : str
-            Directory and name of custom object .rad file is stored
+            Directory and name of custom object .rad file is stored, and any geometry
+            modifications needed for it.
 
 
         Returns
@@ -2308,7 +2309,12 @@ def makeScene1axis(self, trackerdict=None, module=None, sceneDict=None,
         cumulativesky : bool
             Defines if sky will be generated with cumulativesky or gendaylit.
         moduletype: DEPRECATED. use the `module` kwarg instead.
-
+        appendtoScene : str
+            Appends to each scene a custom text pointing to a custom object
+            created by the user; format of the text should start with the rad 
+            file path and name, and then any other geometry transformations 
+            native to Radiance necessary.
+            
         Returns
         --------
         trackerdict 

bifacial_radiance/module.py

@@ -645,7 +645,9 @@ def _makeModuleFromDict(self,  x=None, y=None, z=None, xgap=None, ygap=None,
         text += frametext
         if hasattr(self, 'omega'):
             text += self.omega.text    
-        text += '\n' + self.customtext  # For adding any other racking details at the module level that the user might want.
+
+        if self.customtext != "":
+            text += '\n' + self.customtext  # For adding any other racking details at the module level that the user might want.
 
         self.text = text
         return text