commit 3172c5d263eeffff1e89d03d79be3ccc1d60fbde
author Guido van Rossum <guido@python.org> Tue Oct 16 18:12:55 2007 +0000
committer Guido van Rossum <guido@python.org> Tue Oct 16 18:12:55 2007 +0000
tree a35e103b36b684c4682ded57236199d6a0ecee4b
parent 60d241f135f10312f5a638846659d7e471f6cac9

Patch# 1258 by Christian Heimes: kill basestring.
I like this because it makes the code shorter! :-)

Lib/os.py

diff --git a/Lib/os.py b/Lib/os.py
index e8676d9..451f833 100644
--- a/Lib/os.py
+++ b/Lib/os.py
@@ -636,7 +636,7 @@
 
 # Supply os.popen()
 def popen(cmd, mode="r", buffering=None):
-    if not isinstance(cmd, basestring):
+    if not isinstance(cmd, str):
         raise TypeError("invalid cmd type (%s, expected string)" % type(cmd))
     if mode not in ("r", "w"):
         raise ValueError("invalid mode %r" % mode)