Minor fixes to backend_template.

anntzer · anntzer · commit 2b5db28a6d1d · 2017-12-26T15:07:33.000-08:00
The reference to _draw_if_interactive_template is outdated.

show() now needs to be able to take a `block` argument.

The backend is still incomplete though; these are just low-hanging
fixes.
diff --git a/lib/matplotlib/backends/backend_template.py b/lib/matplotlib/backends/backend_template.py
@@ -176,10 +176,9 @@ def draw_if_interactive():
     For GUI backends - this should be overridden if drawing should be done in
     interactive python mode
     """
-    # May be implemented via the `_draw_if_interactive_template` helper.
 
 
-def show():
+def show(block=None):
     """
     For image backends - is not required
     For GUI backends - show() is usually the last line of a pylab script and
