Pass "None" as output argument to pydoc.Helper in Python 2.6+.

Trundle · Trundle · commit 06628e1503bb · 2012-10-07T15:02:18.000+02:00
Otherwise, pydoc bypasses the pager in Python 3. Fixes issue bpython#228.
diff --git a/bpython/_internal.py b/bpython/_internal.py
@@ -10,7 +10,11 @@
 class _Helper(object):
 
     def __init__(self):
-        self.helper = pydoc.Helper(sys.stdin, sys.stdout)
+        if hasattr(pydoc.Helper, "output"):
+            # See issue #228
+            self.helper = pydoc.Helper(sys.stdin, None)
+        else:
+            self.helper = pydoc.Helper(sys.stdin, sys.stdout)
 
     def __repr__(self):
         return ("Type help() for interactive help, "
