Implement PEP 3131. Add isidentifier to str.

3 files changed, 44 insertions, 0 deletions

diff --git a/Lib/test/badsyntax_3131.py b/Lib/test/badsyntax_3131.py
new file mode 100644
index 0000000..901d374
--- /dev/null
+++ b/Lib/test/badsyntax_3131.py
@@ -0,0 +1,2 @@
+# -*- coding: utf-8 -*-
+€ = 2
diff --git a/Lib/test/test_pep3131.py b/Lib/test/test_pep3131.py
new file mode 100644
index 0000000..94801c9
--- /dev/null
+++ b/Lib/test/test_pep3131.py
@@ -0,0 +1,29 @@
+# -*- coding: utf-8 -*-
+import unittest
+from test import test_support
+
+class PEP3131Test(unittest.TestCase):
+
+    def test_valid(self):
+        class T:
+            ä = 1
+            µ = 2 # this is a compatibility character
+            蟒 = 3
+        self.assertEquals(getattr(T, "\xe4"), 1)
+        self.assertEquals(getattr(T, "\u03bc"), 2)
+        self.assertEquals(getattr(T, '\u87d2'), 3)
+
+    def test_invalid(self):
+        try:
+            from test import badsyntax_3131
+        except SyntaxError as s:
+            self.assertEquals(str(s),
+              "invalid character in identifier (badsyntax_3131.py, line 2)")
+        else:
+            self.fail("expected exception didn't occur")
+
+def test_main():
+    test_support.run_unittest(PEP3131Test)
+
+if __name__=="__main__":
+    test_main()
diff --git a/Lib/test/test_unicode.py b/Lib/test/test_unicode.py
index 3032f79..4b582de 100644
--- a/Lib/test/test_unicode.py
+++ b/Lib/test/test_unicode.py
@@ -313,6 +313,19 @@ class UnicodeTest(
 
         self.assertRaises(TypeError, "abc".isnumeric, 42)
 
+    def test_isidentifier(self):
+        self.assertTrue("a".isidentifier())
+        self.assertTrue("Z".isidentifier())
+        self.assertTrue("_".isidentifier())
+        self.assertTrue("b0".isidentifier())
+        self.assertTrue("bc".isidentifier())
+        self.assertTrue("b_".isidentifier())
+        self.assertTrue("µ".isidentifier())
+
+        self.assertFalse(" ".isidentifier())
+        self.assertFalse("[".isidentifier())
+        self.assertFalse("©".isidentifier())
+
     def test_contains(self):
         # Testing Unicode contains method
         self.assert_('a' in 'abdb')