Sweet, we have some basic regex support

src/Makefile

@@ -765,12 +765,16 @@ endif
 .PHONY: perf$1_%
 perf$1_%: %.py pyston$1
 	perf record -g -- ./pyston$1 -q -p $$(ARGS) $$<
-	perf report -v -n -g flat,1000 | bash $$(TOOLS_DIR)/cumulate.sh | less -S
+	@$(MAKE) perf_report
 $$(call make_search,perf$1_%)
 
 )
 endef
 
+.PHONY: perf_report
+perf_report:
+	perf report -v -n -g flat,1000 | bash $(TOOLS_DIR)/cumulate.sh | less -S
+
 .PHONY: run run_% dbg_% debug_% perf_%
 run: run_dbg
 run_%: run_dbg_%

src/runtime/tuple.cpp

@@ -237,6 +237,11 @@ Box* tupleNe(BoxedTuple* self, Box* rhs) {
     return _tupleCmp(self, static_cast<BoxedTuple*>(rhs), AST_TYPE::NotEq);
 }
 
+Box* tupleNonzero(BoxedTuple* self) {
+    RELEASE_ASSERT(self->cls == tuple_cls, "");
+    return boxBool(self->elts.size() != 0);
+}
+
 Box* tupleContains(BoxedTuple* self, Box* elt) {
     int size = self->elts.size();
     for (int i = 0; i < size; i++) {
@@ -373,6 +378,8 @@ void setupTuple() {
     tuple_cls->giveAttr("__eq__", new BoxedFunction(boxRTFunction((void*)tupleEq, UNKNOWN, 2)));
     tuple_cls->giveAttr("__ne__", new BoxedFunction(boxRTFunction((void*)tupleNe, UNKNOWN, 2)));
 
+    tuple_cls->giveAttr("__nonzero__", new BoxedFunction(boxRTFunction((void*)tupleNonzero, BOXED_BOOL, 1)));
+
     tuple_cls->giveAttr("__hash__", new BoxedFunction(boxRTFunction((void*)tupleHash, BOXED_INT, 1)));
     tuple_cls->giveAttr("__len__", new BoxedFunction(boxRTFunction((void*)tupleLen, BOXED_INT, 1)));
     tuple_cls->giveAttr("__repr__", new BoxedFunction(boxRTFunction((void*)tupleRepr, STR, 1)));

test/tests/sre_compile_test.py

+# skip-if: True
+# This test works but 1) is very slow [the importing is, not the regex itself], and 2) throws warnings
+
+import sre_compile
+r = sre_compile.compile("a(b+)c", 0)
+print r.match("")
+print r.match("ac")
+print r.match("abc").groups()
+print r.match("abbc").groups()

test/tests/tuples.py

@@ -168,3 +168,8 @@ try:
     t[3]
 except IndexError as e:
     print e
+
+print bool(())
+print bool((1,))
+print bool((0,))
+print bool((0, 0))