thing

typon/trans/stdlib/builtins_.py

@@ -59,6 +59,7 @@ class str:
     def __contains__(self, item: Self) -> bool: ...
 
 assert len("a")
+assert not len(6)
 
 class bytes:
     def decode(self, encoding: str) -> str: ...
@@ -172,4 +173,6 @@ assert not __test_type().test_opt()
 def exit(code: int | None = None) -> None: ...
 
 class Exception:
-    def __init__(self, message: str) -> None: ...
+    def __init__(self, message: str) -> None: ...
\ No newline at end of file
+
+assert next([])
\ No newline at end of file

typon/trans/transpiler/phases/typing/expr.py

@@ -8,7 +8,7 @@ from transpiler.phases.typing.common import ScoperVisitor, get_iter, get_next, i
 from transpiler.phases.typing.exceptions import ArgumentCountMismatchError, TypeMismatchKind, TypeMismatchError
 from transpiler.phases.typing.types import BaseType, TY_STR, TY_BOOL, TY_INT, TY_COMPLEX, TY_FLOAT, TY_NONE, \
     ClassTypeType, ResolvedConcreteType, GenericType, CallableInstanceType, TY_LIST, TY_SET, TY_DICT, RuntimeValue, \
-    TypeVariable, TY_LAMBDA, TypeListType, MethodType
+    TypeVariable, TY_LAMBDA, TypeListType, MethodType, TY_TUPLE
 from transpiler.phases.typing.scope import ScopeKind, VarDecl, VarKind
 from transpiler.utils import linenodata
 
@@ -52,7 +52,7 @@ class ScoperExprVisitor(ScoperVisitor):
         return res
 
     def visit_Tuple(self, node: ast.Tuple) -> BaseType:
-        return TupleType(*[self.visit(e) for e in node.elts])
+        return TY_TUPLE.instantiate_(*[self.visit(e) for e in node.elts])
 
     def visit_Slice(self, node: ast.Slice) -> BaseType:
         for n in ("lower", "upper", "step"):

typon/trans/transpiler/phases/typing/types.py

@@ -501,7 +501,7 @@ class CallableInstanceType(GenericInstanceType, MethodType):
         )
 
     def __str__(self):
-        return f"({", ".join(map(str, self.parameters + ([", *args"] if self.is_variadic else [])))}) -> {self.return_type}"
+        return f"({", ".join(map(str, self.parameters + (["*args"] if self.is_variadic else [])))}) -> {self.return_type}"
 
     def try_assign_internal(self, other: BaseType) -> bool:
         if not isinstance(other, CallableInstanceType):