There's a macro PycString_IMPORT which the documentation listed as
PycStringIO_IMPORT. While arguably the name used in the documentation
is more consistent, I think it's probably safer not to change the
macro definition and instead fix the doco.
diff --git a/Include/cStringIO.h b/Include/cStringIO.h
index c1328de..7389432 100644
--- a/Include/cStringIO.h
+++ b/Include/cStringIO.h
@@ -65,7 +65,7 @@
Before calling any of the functions or macros, you must initialize
the routines with:
- PycStringIO_IMPORT
+ PycString_IMPORT
This would typically be done in your init function.