Bugfixes and formatting improvements

python/renderer.py

@@ -56,6 +56,7 @@ class Renderer:
 
     def render_info_dict(self, info_dict):
         line_blocks = []
+        line_len = -1
 
         for node_dict in info_dict:
             if self.node_names is None or node_dict["name"] in self.node_names:
@@ -63,8 +64,14 @@ class Renderer:
 
                 if lines:
                     line_blocks.append(lines)
-
-        first_line = build_line("=", len(lines[-1]))
+                    
+                    if len(lines[-1]) > line_len:
+                        line_len = len(lines[-1])
+
+        if line_len > -1:
+            first_line = build_line("=", line_len)
+        else: # No gpus found with current settings.
+            return "--- No available GPUs found ---"
         
         final_lines = []
 
@@ -141,8 +148,6 @@ class Renderer:
         pad_line = build_line("-", line_len)
         pad_line_empty = build_line(" ", line_len)
 
-        if self.gpu_outer_spacings:
-            lines.append(pad_line_empty)
         lines.append(build_line("=", line_len))
 
         if self.gpu_outer_spacings:
@@ -188,13 +193,13 @@ class Renderer:
 
         if self.display_users:
             lines.append(self.get_rendered_users_line(gpu_dict["running_processes"], len(line_meta)))
+            
+            if self.gpu_outer_spacings:
+                lines.append(empty_line)
         else:
             if self.gpu_inner_spacings:
                 lines.append(empty_line)
 
-        if self.gpu_outer_spacings:
-            lines = [empty_line] + lines
-
         return lines
 
     def get_rendered_users_line(self, processes_list, line_len):