This header was supposed to be committed in r69476

Modules/tkinter.h

+#ifndef TKINTER_H
+#define TKINTER_H
+
+/* This header is used to share some macros between _tkinter.c and
+ * tkappinit.c */
+
+/* TK_RELEASE_LEVEL is always one of the following:
+ *	TCL_ALPHA_RELEASE   0
+ *  TCL_BETA_RELEASE    1
+ *  TCL_FINAL_RELEASE   2
+ */
+#define TK_VERSION_HEX ((TK_MAJOR_VERSION << 24) | \
+		(TK_MINOR_VERSION << 16) | \
+		(TK_RELEASE_SERIAL << 8) | \
+		(TK_RELEASE_LEVEL << 0))
+
+/* Protect Tk 8.4.13 and older from a deadlock that happens when trying
+ * to load tk after a failed attempt. */
+#if TK_VERSION_HEX < 0x08040e02
+#define TKINTER_PROTECT_LOADTK
+#define TKINTER_LOADTK_ERRMSG \
+	"Calling Tk_Init again after a previous call failed might deadlock"
+#endif
+
+#endif /* !TKINTER_H */