Mercurial > cpython-lru_cache-weakref

diff Python/import.c @ 1288:9fed5726a36d legacy-trunk

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Several changes in one: (1) dictionaries/mappings now have attributes values() and items() as well as keys(); at the C level, use the new function mappinggetnext() to iterate over a dictionary. (2) "class C(): ..." is now illegal; you must write "class C: ...". (3) Class objects now know their own name (finally!); and minor improvements to the way how classes, functions and methods are represented as strings. (4) Added an "access" statement and semantics. (This is still experimental -- as long as you don't use the keyword 'access' nothing should be changed.)
author Guido van Rossum <guido@python.org>
date Wed, 19 May 1993 14:50:45 +0000
parents 14369a5e6167
children 4d292c7857d4
line wrap: on
line diff
--- a/Python/import.c	Mon May 17 08:34:16 1993 +0000
+++ b/Python/import.c	Wed May 19 14:50:45 1993 +0000
@@ -54,7 +54,7 @@
 
 /* Magic word to reject .pyc files generated by other Python versions */
 
-#define MAGIC 0x99BE3AL
+#define MAGIC 0x999901L /* Increment by one for each incompatible change */
 
 static object *modules;
 
@@ -353,46 +353,27 @@
 	return get_module(m, getmodulename(m), (object **)NULL);
 }
 
-static void
-cleardict(d)
-	object *d;
-{
-	int i;
-	for (i = getdictsize(d); --i >= 0; ) {
-		char *k;
-		k = getdictkey(d, i);
-		if (k != NULL)
-			(void) dictremove(d, k);
-	}
-}
-
 void
 doneimport()
 {
 	if (modules != NULL) {
-		int i;
+		int pos;
+		object *modname, *module;
 		/* Explicitly erase all modules; this is the safest way
 		   to get rid of at least *some* circular dependencies */
-		for (i = getdictsize(modules); --i >= 0; ) {
-			object *k;
-			k = getdict2key(modules, i);
-			if (k != NULL) {
-				object *m;
-				m = dict2lookup(modules, k);
-				if (m == NULL)
-					err_clear();
-				else if (is_moduleobject(m)) {
-					object *d;
-					d = getmoduledict(m);
-					if (d != NULL && is_dictobject(d)) {
-						cleardict(d);
-					}
-				}
+		pos = 0;
+		while (mappinggetnext(modules, &pos, &modname, &module)) {
+			if (is_moduleobject(module)) {
+				object *dict;
+				dict = getmoduledict(module);
+				if (dict != NULL && is_dictobject(dict))
+					mappingclear(dict);
 			}
 		}
-		cleardict(modules);
+		mappingclear(modules);
 	}
 	DECREF(modules);
+	modules = NULL;
 }