Changes to accept double-quoted strings on input.

Parser/tokenizer.c

@@ -564,7 +564,7 @@ tok_get(tok, p_start, p_end)
 		return NUMBER;
 	}
 	
-	/* String */
+	/* String (single quotes) */
 	if (c == '\'') {
 		for (;;) {
 			c = tok_nextc(tok);
@@ -590,6 +590,32 @@ tok_get(tok, p_start, p_end)
 		return STRING;
 	}
 	
+	/* String (double quotes) */
+	if (c == '\"') {
+		for (;;) {
+			c = tok_nextc(tok);
+			if (c == '\n' || c == EOF) {
+				tok->done = E_TOKEN;
+				tok->cur = tok->inp;
+				return ERRORTOKEN;
+			}
+			if (c == '\\') {
+				c = tok_nextc(tok);
+				*p_end = tok->cur;
+				if (c == '\n' || c == EOF) {
+					tok->done = E_TOKEN;
+					tok->cur = tok->inp;
+					return ERRORTOKEN;
+				}
+				continue;
+			}
+			if (c == '\"')
+				break;
+		}
+		*p_end = tok->cur;
+		return STRING;
+	}
+	
 	/* Line continuation */
 	if (c == '\\') {
 		c = tok_nextc(tok);

Python/compile.c

@@ -481,13 +481,14 @@ parsestr(s)
 	char *buf;
 	char *p;
 	int c;
-	if (*s != '\'') {
+	int quote = *s;
+	if (quote != '\'' && quote != '\"') {
 		err_badcall();
 		return NULL;
 	}
 	s++;
 	len = strlen(s);
-	if (s[--len] != '\'') {
+	if (s[--len] != quote) {
 		err_badcall();
 		return NULL;
 	}
@@ -505,6 +506,7 @@ parsestr(s)
 		/* XXX This assumes ASCII! */
 		case '\\': *p++ = '\\'; break;
 		case '\'': *p++ = '\''; break;
+		case '\"': *p++ = '\"'; break;
 		case 'b': *p++ = '\b'; break;
 		case 'f': *p++ = '\014'; break; /* FF */
 		case 't': *p++ = '\t'; break;