python.el will use temporary files to communicate with the inferior
python process. These temporary files are never cleaned up.
To reproduce, simply run M-x run-python and check the temp dir. It has a
"py?????" file in it. Kill the buffer and repeat, such files will
accumulate.
The following simple patch will delete the file after loading it.
--- lisp/progmodes/python.el 2013-10-07 18:51:26 +0000
+++ lisp/progmodes/python.el 2013-10-18 18:47:02 +0000
@@ -2048,6 +2048,8 @@
(file-name (or (buffer-file-name) temp-file-name)))
(with-temp-file temp-file-name
(insert string)
+ (insert (format "\n\nimport os ; os.remove('''%s''')\n"
+ temp-file-name))
(delete-trailing-whitespace))
(python-shell-send-file file-name process temp-file-name))
(comint-send-string process string)