In Parser\parser.c in classify, the 'str' parameter is assigned into the local variable 's'. However, 'str' is not used anywhere else in the function, which makes 's' redundant. My proposal is to simply remove 's', and just use 'str' instead. The diff is attached. I played a little with the interpreter, and everything worked as usual. In addition, I run 'python -m test' (on my 64-bit Windows 10) before and after applying the patch, and got the same output: 354 tests OK. 1 test altered the execution environment: test_subprocess 45 tests skipped: test_bz2 test_crypt test_curses test_dbm_gnu test_dbm_ndbm test_devpoll test_epoll test_fcntl test_fork1 test_gdb test_grp test_idle test_ioctl test_kqueue test_lzma test_nis test_openpty test_ossaudiodev test_pipes test_poll test_posix test_pty test_pwd test_readline test_resource test_smtpnet test_socketserver test_spwd test_sqlite test_ssl test_syslog test_tcl test_threadsignals test_timeout test_tix test_tk test_ttk_guionly test_ttk_textonly test_urllib2net test_urllibnet test_wait3 test_wait4 test_winsound test_xmlrpc_net test_zipfile64
