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-rw-r--r--Python/import.c33
1 files changed, 31 insertions, 2 deletions
diff --git a/Python/import.c b/Python/import.c
index f4b4ca9..93952a5 100644
--- a/Python/import.c
+++ b/Python/import.c
@@ -148,8 +148,15 @@ import_module(name)
char *name;
{
object *m;
- if ((m = dictlookup(modules, name)) == NULL)
- m = load_module(name);
+ if ((m = dictlookup(modules, name)) == NULL) {
+ if (init_builtin(name)) {
+ if ((m = dictlookup(modules, name)) == NULL)
+ err_setstr(SystemError, "builtin module missing");
+ }
+ else {
+ m = load_module(name);
+ }
+ }
return m;
}
@@ -204,3 +211,25 @@ doneimport()
}
DECREF(modules);
}
+
+
+/* Initialize built-in modules when first imported */
+
+extern struct {
+ char *name;
+ void (*initfunc)();
+} inittab[];
+
+static int
+init_builtin(name)
+ char *name;
+{
+ int i;
+ for (i = 0; inittab[i].name != NULL; i++) {
+ if (strcmp(name, inittab[i].name) == 0) {
+ (*inittab[i].initfunc)();
+ return 1;
+ }
+ }
+ return 0;
+}