Changes in / [99e6860:3750279] in sasmodels

File:

• sasmodels/generate.py (modified) (1 diff)

sasmodels/generate.py

@@ -503 +503 @@
     fn = q_pars['fn']
 
-    # Build polydispersity loops
-    depth = 4
-    offset = ""
-    loop_head = []
-    loop_end = []
-    for name in pd_pars:
-        subst = { 'name': name, 'offset': offset }
-        loop_head.append(indent(LOOP_OPEN%subst, depth))
-        loop_end.insert(0, (" "*depth) + "}")
-        offset += '+N'+name
-        depth += 2
+    if len(pd_pars) > 0:
+        # Build polydispersity loops
+        depth = 4
+        offset = ""
+        loop_head = []
+        loop_end = []
+        for name in pd_pars:
+            subst = { 'name': name, 'offset': offset }
+            loop_head.append(indent(LOOP_OPEN%subst, depth))
+            loop_end.insert(0, (" "*depth) + "}")
+            offset += '+N'+name
+            depth += 2
 
     # The volume parameters in the inner loop are used to call the volume()