From 197346fafe41332b896999b5bbdc7b1dabe57262 Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Fri, 31 Oct 1997 18:38:52 +0000
Subject: [PATCH] New policy for package imports: only a directory containing
 __init__.py (or __init__.pyc/.pyo, whichever applies) is considered a
 package.  All other subdirectories are left alone.  Should make Konrad Hinsen
 happy!

---
 Python/import.c | 40 ++++++++++++++++++++++++++++++++++++++--
 1 file changed, 38 insertions(+), 2 deletions(-)

diff --git a/Python/import.c b/Python/import.c
index 9f68c626cd2..aef73537c55 100644
--- a/Python/import.c
+++ b/Python/import.c
@@ -636,6 +636,8 @@ is_builtin(name)
 extern FILE *PyWin_FindRegisteredModule();
 #endif
 
+static int find_init_module Py_PROTO((char *)); /* Forward */
+
 static struct filedescr *
 find_module(name, path, buf, buflen, p_fp)
 	char *name;
@@ -733,8 +735,10 @@ find_module(name, path, buf, buflen, p_fp)
 #ifdef HAVE_STAT
 		if (stat(buf, &statbuf) == 0) {
 			static struct filedescr fd = {"", "", PKG_DIRECTORY};
-			if (S_ISDIR(statbuf.st_mode))
-				return &fd;
+			if (S_ISDIR(statbuf.st_mode)) {
+				if (find_init_module(buf))
+					return &fd;
+			}
 		}
 #else
 		/* XXX How are you going to test for directories? */
@@ -766,6 +770,38 @@ find_module(name, path, buf, buflen, p_fp)
 	return fdp;
 }
 
+#ifdef HAVE_STAT
+/* Helper to look for __init__.py or __init__.py[co] in potential package */
+static int
+find_init_module(buf)
+	char *buf;
+{
+	int save_len = strlen(buf);
+	int i = save_len;
+	struct stat statbuf;
+
+	if (save_len + 13 >= MAXPATHLEN)
+		return 0;
+	buf[i++] = SEP;
+	strcpy(buf+i, "__init__.py");
+	if (stat(buf, &statbuf) == 0) {
+		buf[save_len] = '\0';
+		return 1;
+	}
+	i += strlen(buf+i);
+	if (Py_OptimizeFlag)
+		strcpy(buf+i, "o");
+	else
+		strcpy(buf+i, "c");
+	if (stat(buf, &statbuf) == 0) {
+		buf[save_len] = '\0';
+		return 1;
+	}
+	buf[save_len] = '\0';
+	return 0;
+}
+#endif /* HAVE_STAT */
+
 
 static int init_builtin Py_PROTO((char *)); /* Forward */