Handle empty row gracefully

tangaowei · Apr 10, 2013 · d0a259c · d0a259c
1 parent 7f32cfa
commit d0a259c
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/awscli/table.py b/awscli/table.py
@@ -295,6 +295,8 @@ def _render_rows(self, section, max_width, stream):
             return
         widths = section.calculate_column_widths(padding=4,
                                                  max_width=max_width)
+        if not widths:
+            return
         self._write_line_break(stream, widths)
         for row in section.rows:
             # TODO: Built the string in a list then join instead of using +=,
@@ -336,6 +338,8 @@ def calculate_column_widths(self, padding=0, max_width=None):
         unscaled_widths = [w + padding for w in self._max_widths]
         if max_width is None:
             return unscaled_widths
+        if not unscaled_widths:
+            return unscaled_widths
         else:
             # Compute scale factor for max_width.
             scale_factor = max_width / float(sum(unscaled_widths))