init

.venv/lib/python3.8/site-packages/pyflakes/test/test_builtin.py

@@ -0,0 +1,41 @@
+"""
+Tests for detecting redefinition of builtins.
+"""
+from sys import version_info
+
+from pyflakes import messages as m
+from pyflakes.test.harness import TestCase, skipIf
+
+
+class TestBuiltins(TestCase):
+
+    def test_builtin_unbound_local(self):
+        self.flakes('''
+        def foo():
+            a = range(1, 10)
+            range = a
+            return range
+
+        foo()
+
+        print(range)
+        ''', m.UndefinedLocal)
+
+    def test_global_shadowing_builtin(self):
+        self.flakes('''
+        def f():
+            global range
+            range = None
+            print(range)
+
+        f()
+        ''')
+
+    @skipIf(version_info >= (3,), 'not an UnboundLocalError in Python 3')
+    def test_builtin_in_comprehension(self):
+        self.flakes('''
+        def f():
+            [range for range in range(1, 10)]
+
+        f()
+        ''', m.UndefinedLocal)