py/compile: Refine SyntaxError for repeated use of global/nonlocal.

1 files changed, 21 insertions, 0 deletions

diff --git a/tests/basics/scope.py b/tests/basics/scope.py
new file mode 100644
index 000000000..3aecc0b8d
--- /dev/null
+++ b/tests/basics/scope.py
@@ -0,0 +1,21 @@
+# test scoping rules
+
+# explicit global variable
+a = 1
+def f():
+    global a
+    global a, a # should be able to redefine as global
+    a = 2
+f()
+print(a)
+
+# explicit nonlocal variable
+def f():
+    a = 1
+    def g():
+        nonlocal a
+        nonlocal a, a # should be able to redefine as nonlocal
+        a = 2
+    g()
+    return a
+print(f())