Patch #534304: Implement phase 1 of PEP 263.
diff --git a/Parser/tokenizer_pgen.c b/Parser/tokenizer_pgen.c
new file mode 100644
index 0000000..9cb8492
--- /dev/null
+++ b/Parser/tokenizer_pgen.c
@@ -0,0 +1,2 @@
+#define PGEN
+#include "tokenizer.c"