Update: release candidate ("rc1") packages for Python 3.3.3 and 2.7.6 have been created.  They are available here:

http://www.python.org/download/releases/3.3.3/
http://www.python.org/download/releases/2.7.6/

For 3.3.3 and 2.7.6, the python.org OS X 64-bit/32-bit x86-64/i386 installers now also include built-in versions of Tcl/Tk 8.5, eliminating the need to install third-party versions of Tcl/Tk.  Shortly after the rc1 packages were released, an upstream Tk fix for this problem was published by the Tk project.  Updated "rc1_rev1" installers which include that Tk fix should be available shortly on the 3.3.3 and 2.7.6 web pages.  The Tk fix will also be included in the final 3.3.3 and 2.7.6 releases and in the next pre-release of 3.4.0 (expected to be 3.4.0b1).  If you are using a third-party version of Tcl/Tk 8.5 on OS X 10.9, check with the vendor for fix availability.