bpo-32482: Improve syntax and grammar tests. (#5085)

Lib/test/test_grammar.py

@@ -11,7 +11,7 @@ from sys import *
 
 class TokenTests(unittest.TestCase):
 
-    def testBackslash(self):
+    def test_backslash(self):
         # Backslash means line continuation:
         x = 1 \
         + 1
@@ -21,29 +21,42 @@ class TokenTests(unittest.TestCase):
         x = 0
         self.assertEqual(x, 0, 'backslash ending comment')
 
-    def testPlainIntegers(self):
+    def test_plain_integers(self):
+        self.assertEqual(type(000), type(0))
         self.assertEqual(0xff, 255)
         self.assertEqual(0377, 255)
+        self.assertEqual(0o377, 255)
         self.assertEqual(2147483647, 017777777777)
+        self.assertEqual(2147483647, 0o17777777777)
+        self.assertEqual(0b1001, 9)
         # "0x" is not a valid literal
         self.assertRaises(SyntaxError, eval, "0x")
         from sys import maxint
         if maxint == 2147483647:
-            self.assertEqual(-2147483647-1, -020000000000)
+            self.assertEqual(-2147483647-1, -0o20000000000)
             # XXX -2147483648
             self.assertTrue(037777777777 > 0)
+            self.assertTrue(0o37777777777 > 0)
             self.assertTrue(0xffffffff > 0)
-            for s in '2147483648', '040000000000', '0x100000000':
+            self.assertTrue(0b1111111111111111111111111111111 > 0)
+            for s in ('2147483648', '040000000000', '0o40000000000',
+                      '0x100000000',
+                      '0b10000000000000000000000000000000'):
                 try:
                     x = eval(s)
                 except OverflowError:
                     self.fail("OverflowError on huge integer literal %r" % s)
         elif maxint == 9223372036854775807:
             self.assertEqual(-9223372036854775807-1, -01000000000000000000000)
+            self.assertEqual(-9223372036854775807-1, -0o1000000000000000000000)
             self.assertTrue(01777777777777777777777 > 0)
+            self.assertTrue(0o1777777777777777777777 > 0)
             self.assertTrue(0xffffffffffffffff > 0)
+            self.assertTrue(0b11111111111111111111111111111111111111111111111111111111111111 > 0)
             for s in '9223372036854775808', '02000000000000000000000', \
-                     '0x10000000000000000':
+                     '0o2000000000000000000000', \
+                     '0x10000000000000000', \
+                     '0b100000000000000000000000000000000000000000000000000000000000000':
                 try:
                     x = eval(s)
                 except OverflowError:
@@ -51,7 +64,7 @@ class TokenTests(unittest.TestCase):
         else:
             self.fail('Weird maxint value %r' % maxint)
 
-    def testLongIntegers(self):
+    def test_long_integers(self):
         x = 0L
         x = 0l
         x = 0xffffffffffffffffL
@@ -61,7 +74,7 @@ class TokenTests(unittest.TestCase):
         x = 123456789012345678901234567890L
         x = 123456789012345678901234567890l
 
-    def testFloats(self):
+    def test_floats(self):
         x = 3.14
         x = 314.
         x = 0.314
@@ -81,7 +94,7 @@ class TokenTests(unittest.TestCase):
         self.assertEqual(1 if 0else 0, 0)
         self.assertRaises(SyntaxError, eval, "0 if 1Else 0")
 
-    def testStringLiterals(self):
+    def test_string_literals(self):
         x = ''; y = ""; self.assertTrue(len(x) == 0 and x == y)
         x = '\''; y = "'"; self.assertTrue(len(x) == 1 and x == y and ord(x) == 39)
         x = '"'; y = "\""; self.assertTrue(len(x) == 1 and x == y and ord(x) == 34)
@@ -133,11 +146,11 @@ class GrammarTests(unittest.TestCase):
     # expr_input: testlist NEWLINE
     # XXX Hard to test -- used only in calls to input()
 
-    def testEvalInput(self):
+    def test_eval_input(self):
         # testlist ENDMARKER
         x = eval('1, 0 or 1')
 
-    def testFuncdef(self):
+    def test_funcdef(self):
         ### 'def' NAME parameters ':' suite
         ### parameters: '(' [varargslist] ')'
         ### varargslist: (fpdef ['=' test] ',')* ('*' NAME [',' ('**'|'*' '*') NAME]
@@ -153,7 +166,8 @@ class GrammarTests(unittest.TestCase):
         f1(*(), **{})
         def f2(one_argument): pass
         def f3(two, arguments): pass
-        # Silence Py3k warning
+        with check_py3k_warnings(('tuple parameter unpacking has been removed',
+                                  SyntaxWarning)):
             exec('def f4(two, (compound, (argument, list))): pass')
             exec('def f5((compound, first), two): pass')
         self.assertEqual(f2.func_code.co_varnames, ('one_argument',))
@@ -174,7 +188,8 @@ class GrammarTests(unittest.TestCase):
         def v0(*rest): pass
         def v1(a, *rest): pass
         def v2(a, b, *rest): pass
-        # Silence Py3k warning
+        with check_py3k_warnings(('tuple parameter unpacking has been removed',
+                                  SyntaxWarning)):
             exec('def v3(a, (b, c), *rest): return a, b, c, rest')
 
         f1()
@@ -212,7 +227,9 @@ class GrammarTests(unittest.TestCase):
         d01()
         d01(1)
         d01(*(1,))
+        d01(*[] or [2])
         d01(**{'a':2})
+        d01(**{'a':2} or {})
         def d11(a, b=1): pass
         d11(1)
         d11(1, 2)
@@ -280,8 +297,11 @@ class GrammarTests(unittest.TestCase):
         d22v(*(1, 2, 3, 4))
         d22v(1, 2, *(3, 4, 5))
         d22v(1, *(2, 3), **{'d': 4})
-        # Silence Py3k warning
+        with check_py3k_warnings(('parenthesized argument names are invalid',
+                                  SyntaxWarning)):
             exec('def d31v((x)): pass')
+        with check_py3k_warnings(('tuple parameter unpacking has been removed',
+                                  SyntaxWarning)):
             exec('def d32v((x,)): pass')
         d31v(1)
         d32v((1,))
@@ -293,12 +313,19 @@ class GrammarTests(unittest.TestCase):
                                                     {'x':2, 'y':5}))
         self.assertRaises(SyntaxError, eval, "f(1, *(2,3), 4)")
         self.assertRaises(SyntaxError, eval, "f(1, x=2, *(3,4), x=5)")
+        self.assertEqual(f(**{'eggs':'scrambled', 'spam':'fried'}),
+                         ((), {'eggs':'scrambled', 'spam':'fried'}))
+        self.assertEqual(f(spam='fried', **{'eggs':'scrambled'}),
+                         ((), {'eggs':'scrambled', 'spam':'fried'}))
 
         # Check ast errors in *args and *kwargs
         check_syntax_error(self, "f(*g(1=2))")
         check_syntax_error(self, "f(**g(1=2))")
 
-    def testLambdef(self):
+        # Check trailing commas are permitted in funcdef argument list
+        def f(a,): pass
+
+    def test_lambdef(self):
         ### lambdef: 'lambda' [varargslist] ':' test
         l1 = lambda : 0
         self.assertEqual(l1(), 0)
@@ -311,12 +338,18 @@ class GrammarTests(unittest.TestCase):
         self.assertEqual(l5(1, 2), 5)
         self.assertEqual(l5(1, 2, 3), 6)
         check_syntax_error(self, "lambda x: x = 2")
+        with check_py3k_warnings(('tuple parameter unpacking has been removed',
+                                  SyntaxWarning)):
             check_syntax_error(self, "lambda (None,): None")
 
+        # check that trailing commas are permitted
+        l10 = lambda a,: 0
+
+
     ### stmt: simple_stmt | compound_stmt
     # Tested below
 
-    def testSimpleStmt(self):
+    def test_simple_stmt(self):
         ### simple_stmt: small_stmt (';' small_stmt)* [';']
         x = 1; pass; del x
         def foo():
@@ -327,7 +360,7 @@ class GrammarTests(unittest.TestCase):
     ### small_stmt: expr_stmt | print_stmt  | pass_stmt | del_stmt | flow_stmt | import_stmt | global_stmt | access_stmt | exec_stmt
     # Tested below
 
-    def testExprStmt(self):
+    def test_expr_stmt(self):
         # (exprlist '=')* exprlist
         1
         1, 2, 3
@@ -340,7 +373,7 @@ class GrammarTests(unittest.TestCase):
         check_syntax_error(self, "x + 1 = 1")
         check_syntax_error(self, "a + 1 = b + 2")
 
-    def testPrintStmt(self):
+    def test_print_stmt(self):
         # 'print' (test ',')* [test]
         import StringIO
 
@@ -410,7 +443,7 @@ hello world
         check_syntax_error(self, 'print ,')
         check_syntax_error(self, 'print >> x,')
 
-    def testDelStmt(self):
+    def test_del_stmt(self):
         # 'del' exprlist
         abc = [1,2,3]
         x, y, z = abc
@@ -419,18 +452,18 @@ hello world
         del abc
         del x, y, (z, xyz)
 
-    def testPassStmt(self):
+    def test_pass_stmt(self):
         # 'pass'
         pass
 
     # flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt
     # Tested below
 
-    def testBreakStmt(self):
+    def test_break_stmt(self):
         # 'break'
         while 1: break
 
-    def testContinueStmt(self):
+    def test_continue_stmt(self):
         # 'continue'
         i = 1
         while i: i = 0; continue
@@ -482,7 +515,7 @@ hello world
                 self.fail("continue then break in try/except in loop broken!")
         test_inner()
 
-    def testReturn(self):
+    def test_return(self):
         # 'return' [testlist]
         def g1(): return
         def g2(): return 1
@@ -513,7 +546,7 @@ hello world
         while count < 2:
             count += 1
             try:
-                1/0
+                1.0/0.0
             finally:
                 break
         self.assertEqual(count, 1)
@@ -537,7 +570,7 @@ hello world
         for count in [0, 1]:
             self.assertEqual(count, 0)
             try:
-                1/0
+                1.0/0.0
             finally:
                 break
         self.assertEqual(count, 0)
@@ -559,13 +592,33 @@ hello world
 
         def g3():
             try:
-                1/0
+                1.0/0.0
             finally:
                 return 4
         self.assertEqual(g3(), 4)
 
-    def testYield(self):
+    def test_yield(self):
+        # Allowed as standalone statement
+        def g(): yield 1
+        # Allowed as RHS of assignment
+        def g(): x = yield 1
+        # Ordinary yield accepts implicit tuples
+        def g(): yield 1, 1
+        def g(): x = yield 1, 1
+        # Requires parentheses as subexpression
+        def g(): 1, (yield 1)
+        check_syntax_error(self, "def g(): 1, yield 1")
+        # Requires parentheses as call argument
+        def g(): f((yield 1))
+        def g(): f((yield 1), 1)
+        check_syntax_error(self, "def g(): f(yield 1)")
+        check_syntax_error(self, "def g(): f(yield 1, 1)")
+        # Not allowed at top level
+        check_syntax_error(self, "yield")
+        # Not allowed at class scope
         check_syntax_error(self, "class foo:yield 1")
+        # Check annotation refleak on SyntaxError
+        check_syntax_error(self, "def g(a:(yield)): pass")
 
     def test_yield_in_comprehensions(self):
         # Check yield in comprehensions
@@ -607,14 +660,14 @@ hello world
         check("((yield x) for x in ())",
               "'yield' inside generator expression")
 
-    def testRaise(self):
+    def test_raise(self):
         # 'raise' test [',' test]
         try: raise RuntimeError, 'just testing'
         except RuntimeError: pass
         try: raise KeyboardInterrupt
         except KeyboardInterrupt: pass
 
-    def testImport(self):
+    def test_import(self):
         # 'import' dotted_as_names
         import sys
         import time, sys
@@ -627,13 +680,13 @@ hello world
         from sys import (path, argv)
         from sys import (path, argv,)
 
-    def testGlobal(self):
+    def test_global(self):
         # 'global' NAME (',' NAME)*
         global a
         global a, b
         global one, two, three, four, five, six, seven, eight, nine, ten
 
-    def testExec(self):
+    def test_exec(self):
         # 'exec' expr ['in' expr [',' expr]]
         z = None
         del z
@@ -665,7 +718,7 @@ hello world
         if (g, l) != ({'a':1}, {'b':2}):
             self.fail('exec ... in g (%s), l (%s)' %(g,l))
 
-    def testAssert(self):
+    def test_assert(self):
         # assertTruestmt: 'assert' test [',' test]
         assert 1
         assert 1, 1
@@ -704,7 +757,7 @@ hello world
     ### compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | funcdef | classdef
     # Tested below
 
-    def testIf(self):
+    def test_if(self):
         # 'if' test ':' suite ('elif' test ':' suite)* ['else' ':' suite]
         if 1: pass
         if 1: pass
@@ -717,7 +770,7 @@ hello world
         elif 0: pass
         else: pass
 
-    def testWhile(self):
+    def test_while(self):
         # 'while' test ':' suite ['else' ':' suite]
         while 0: pass
         while 0: pass
@@ -732,7 +785,7 @@ hello world
             x = 2
         self.assertEqual(x, 2)
 
-    def testFor(self):
+    def test_for(self):
         # 'for' exprlist 'in' exprlist ':' suite ['else' ':' suite]
         for i in 1, 2, 3: pass
         for i, j, k in (): pass
@@ -759,30 +812,30 @@ hello world
             result.append(x)
         self.assertEqual(result, [1, 2, 3])
 
-    def testTry(self):
+    def test_try(self):
         ### try_stmt: 'try' ':' suite (except_clause ':' suite)+ ['else' ':' suite]
         ###         | 'try' ':' suite 'finally' ':' suite
         ### except_clause: 'except' [expr [('as' | ',') expr]]
         try:
-            1/0
+            1/0.0
         except ZeroDivisionError:
             pass
         else:
             pass
-        try: 1/0
+        try: 1/0.0
         except EOFError: pass
         except TypeError as msg: pass
         except RuntimeError, msg: pass
         except: pass
         else: pass
-        try: 1/0
+        try: 1/0.0
         except (EOFError, TypeError, ZeroDivisionError): pass
-        try: 1/0
+        try: 1/0.0
         except (EOFError, TypeError, ZeroDivisionError), msg: pass
         try: pass
         finally: pass
 
-    def testSuite(self):
+    def test_suite(self):
         # simple_stmt | NEWLINE INDENT NEWLINE* (stmt NEWLINE*)+ DEDENT
         if 1: pass
         if 1:
@@ -797,7 +850,7 @@ hello world
             pass
             #
 
-    def testTest(self):
+    def test_test(self):
         ### and_test ('or' and_test)*
         ### and_test: not_test ('and' not_test)*
         ### not_test: 'not' not_test | comparison
@@ -808,7 +861,7 @@ hello world
         if not 1 and 1 and 1: pass
         if 1 and 1 or 1 and 1 and 1 or not 1 and 1: pass
 
-    def testComparison(self):
+    def test_comparison(self):
         ### comparison: expr (comp_op expr)*
         ### comp_op: '<'|'>'|'=='|'>='|'<='|'<>'|'!='|'in'|'not' 'in'|'is'|'is' 'not'
         if 1: pass
@@ -824,40 +877,49 @@ hello world
         if 1 in (): pass
         if 1 not in (): pass
         if 1 < 1 > 1 == 1 >= 1 <= 1 != 1 in 1 not in 1 is 1 is not 1: pass
-        # Silence Py3k warning
+        with check_py3k_warnings(('<> not supported in 3.x; use !=',
+                                  DeprecationWarning)):
             if eval('1 <> 1'): pass
+        with check_py3k_warnings(('<> not supported in 3.x; use !=',
+                                  DeprecationWarning)):
             if eval('1 < 1 > 1 == 1 >= 1 <= 1 <> 1 != 1 in 1 not in 1 is 1 is not 1'): pass
 
-    def testBinaryMaskOps(self):
+    def test_binary_mask_ops(self):
         x = 1 & 1
         x = 1 ^ 1
         x = 1 | 1
 
-    def testShiftOps(self):
+    def test_shift_ops(self):
         x = 1 << 1
         x = 1 >> 1
         x = 1 << 1 >> 1
 
-    def testAdditiveOps(self):
+    def test_additive_ops(self):
         x = 1
         x = 1 + 1
         x = 1 - 1 - 1
         x = 1 - 1 + 1 - 1 + 1
 
-    def testMultiplicativeOps(self):
+    def test_multiplicative_ops(self):
         x = 1 * 1
+        with check_py3k_warnings(('classic int division', DeprecationWarning)):
             x = 1 / 1
+        x = 1 / 1.0
         x = 1 % 1
+        with check_py3k_warnings(('classic int division', DeprecationWarning)):
             x = 1 / 1 * 1 % 1
+        x = 1 / 1.0 * 1 % 1
 
-    def testUnaryOps(self):
+    def test_unary_ops(self):
         x = +1
         x = -1
         x = ~1
         x = ~1 ^ 1 & 1 | 1 & 1 ^ -1
+        with check_py3k_warnings(('classic int division', DeprecationWarning)):
             x = -1*1/1 + 1*1 - ---1*1
+        x = -1*1/1.0 + 1*1 - ---1*1
 
-    def testSelectors(self):
+    def test_selectors(self):
         ### trailer: '(' [testlist] ')' | '[' subscript ']' | '.' NAME
         ### subscript: expr | [expr] ':' [expr]
 
@@ -884,10 +946,10 @@ hello world
         d[1,2] = 3
         d[1,2,3] = 4
         L = list(d)
-        L.sort()
+        L.sort(key=lambda x: (type(x).__name__, x))
         self.assertEqual(str(L), '[1, (1,), (1, 2), (1, 2, 3)]')
 
-    def testAtoms(self):
+    def test_atoms(self):
         ### atom: '(' [testlist] ')' | '[' [testlist] ']' | '{' [dictmaker] '}' | '`' testlist '`' | NAME | NUMBER | STRING
         ### dictorsetmaker: (test ':' test (',' test ':' test)* [',']) | (test (',' test)* [','])
 
@@ -914,7 +976,7 @@ hello world
         x = {'one', 'two', 'three'}
         x = {2, 3, 4,}
 
-        # Silence Py3k warning
+        with check_py3k_warnings(('backquote not supported', SyntaxWarning)):
             x = eval('`x`')
             x = eval('`1 or 2 or 3`')
             self.assertEqual(eval('`1,2`'), '(1, 2)')
@@ -927,7 +989,7 @@ hello world
     ### testlist: test (',' test)* [',']
     # These have been exercised enough above
 
-    def testClassdef(self):
+    def test_classdef(self):
         # 'class' NAME ['(' [testlist] ')'] ':' suite
         class B: pass
         class B2(): pass
@@ -938,6 +1000,7 @@ hello world
             def meth1(self): pass
             def meth2(self, arg): pass
             def meth3(self, a1, a2): pass
+
         # decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE
         # decorators: decorator+
         # decorated: decorators (classdef | funcdef)
@@ -949,14 +1012,14 @@ hello world
             pass
         self.assertEqual(G.decorated, True)
 
-    def testDictcomps(self):
+    def test_dictcomps(self):
         # dictorsetmaker: ( (test ':' test (comp_for |
         #                                   (',' test ':' test)* [','])) |
         #                   (test (comp_for | (',' test)* [','])) )
         nums = [1, 2, 3]
         self.assertEqual({i:i+1 for i in nums}, {1: 2, 2: 3, 3: 4})
 
-    def testListcomps(self):
+    def test_listcomps(self):
         # list comprehension tests
         nums = [1, 2, 3, 4, 5]
         strs = ["Apple", "Banana", "Coconut"]
@@ -979,7 +1042,7 @@ hello world
                          [[1], [1, 1], [1, 2, 4], [1, 3, 9, 27], [1, 4, 16, 64, 256]])
 
         def test_in_func(l):
-            return [None < x < 3 for x in l if x > 2]
+            return [0 < x < 3 for x in l if x > 2]
 
         self.assertEqual(test_in_func(nums), [False, False, False])
 
@@ -1019,7 +1082,7 @@ hello world
         self.assertEqual(x, [('Boeing', 'Airliner'), ('Boeing', 'Engine'), ('Ford', 'Engine'),
                              ('Macdonalds', 'Cheeseburger')])
 
-    def testGenexps(self):
+    def test_genexps(self):
         # generator expression tests
         g = ([x for x in range(10)] for x in range(1))
         self.assertEqual(g.next(), [x for x in range(10)])
@@ -1054,7 +1117,7 @@ hello world
         check_syntax_error(self, "foo(x for x in range(10), 100)")
         check_syntax_error(self, "foo(100, x for x in range(10))")
 
-    def testComprehensionSpecials(self):
+    def test_comprehension_specials(self):
         # test for outmost iterable precomputation
         x = 10; g = (i for i in range(x)); x = 5
         self.assertEqual(len(list(g)), 10)
@@ -1093,11 +1156,11 @@ hello world
         with manager() as x, manager():
             pass
 
-    def testIfElseExpr(self):
+    def test_if_else_expr(self):
         # Test ifelse expressions in various cases
         def _checkeval(msg, ret):
             "helper to check that evaluation of expressions is done correctly"
-            print x
+            print(msg)
             return ret
 
         self.assertEqual([ x() for x in lambda: True, lambda: False if x() ], [True])
@@ -1116,6 +1179,7 @@ hello world
         self.assertEqual((6 + 1 if 1 else 2), 7)
         self.assertEqual((6 - 1 if 1 else 2), 5)
         self.assertEqual((6 * 2 if 1 else 4), 12)
+        with check_py3k_warnings(('classic int division', DeprecationWarning)):
             self.assertEqual((6 / 2 if 1 else 3), 3)
         self.assertEqual((6 < 4 if 0 else 2), 2)
 
@@ -1129,12 +1193,6 @@ hello world
 
 
 def test_main():
-    with check_py3k_warnings(
-            ("backquote not supported", SyntaxWarning),
-            ("tuple parameter unpacking has been removed", SyntaxWarning),
-            ("parenthesized argument names are invalid", SyntaxWarning),
-            ("classic int division", DeprecationWarning),
-            (".+ not supported in 3.x", DeprecationWarning)):
     run_unittest(TokenTests, GrammarTests)
 
 if __name__ == '__main__':

Lib/test/test_syntax.py

@@ -73,13 +73,12 @@ SyntaxError: can't assign to literal
 
 >>> "abc" = 1
 Traceback (most recent call last):
-  File "<doctest test.test_syntax[8]>", line 1
+  File "<doctest test.test_syntax[9]>", line 1
 SyntaxError: can't assign to literal
 
->>> `1` = 1
+>>> b"" = 1
 Traceback (most recent call last):
-  File "<doctest test.test_syntax[10]>", line 1
-SyntaxError: can't assign to repr
+SyntaxError: can't assign to literal
 
 If the left-hand side of an assignment is a list or tuple, an illegal
 expression inside that contain should still cause a syntax error.
@@ -148,7 +147,7 @@ SyntaxError: cannot assign to None
 
 From ast_for_call():
 
->>> def f(it, *varargs):
+>>> def f(it, *varargs, **kwargs):
 ...     return list(it)
 >>> L = range(10)
 >>> f(x for x in L)
@@ -157,73 +156,179 @@ From ast_for_call():
 Traceback (most recent call last):
   File "<doctest test.test_syntax[23]>", line 1
 SyntaxError: Generator expression must be parenthesized if not sole argument
+>>> f(x for x in L, y=1)
+Traceback (most recent call last):
+SyntaxError: Generator expression must be parenthesized if not sole argument
+>>> f(L, x for x in L)
+Traceback (most recent call last):
+SyntaxError: Generator expression must be parenthesized if not sole argument
+>>> f(x for x in L, y for y in L)
+Traceback (most recent call last):
+SyntaxError: Generator expression must be parenthesized if not sole argument
+>>> f(x for x in L,)
+[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
 >>> f((x for x in L), 1)
 [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
 
->>> f(i0,  i1,  i2,  i3,  i4,  i5,  i6,  i7,  i8,  i9,  i10,  i11,
-...   i12,  i13,  i14,  i15,  i16,  i17,  i18,  i19,  i20,  i21,  i22,
-...   i23,  i24,  i25,  i26,  i27,  i28,  i29,  i30,  i31,  i32,  i33,
-...   i34,  i35,  i36,  i37,  i38,  i39,  i40,  i41,  i42,  i43,  i44,
-...   i45,  i46,  i47,  i48,  i49,  i50,  i51,  i52,  i53,  i54,  i55,
-...   i56,  i57,  i58,  i59,  i60,  i61,  i62,  i63,  i64,  i65,  i66,
-...   i67,  i68,  i69,  i70,  i71,  i72,  i73,  i74,  i75,  i76,  i77,
-...   i78,  i79,  i80,  i81,  i82,  i83,  i84,  i85,  i86,  i87,  i88,
-...   i89,  i90,  i91,  i92,  i93,  i94,  i95,  i96,  i97,  i98,  i99,
-...   i100,  i101,  i102,  i103,  i104,  i105,  i106,  i107,  i108,
-...   i109,  i110,  i111,  i112,  i113,  i114,  i115,  i116,  i117,
-...   i118,  i119,  i120,  i121,  i122,  i123,  i124,  i125,  i126,
-...   i127,  i128,  i129,  i130,  i131,  i132,  i133,  i134,  i135,
-...   i136,  i137,  i138,  i139,  i140,  i141,  i142,  i143,  i144,
-...   i145,  i146,  i147,  i148,  i149,  i150,  i151,  i152,  i153,
-...   i154,  i155,  i156,  i157,  i158,  i159,  i160,  i161,  i162,
-...   i163,  i164,  i165,  i166,  i167,  i168,  i169,  i170,  i171,
-...   i172,  i173,  i174,  i175,  i176,  i177,  i178,  i179,  i180,
-...   i181,  i182,  i183,  i184,  i185,  i186,  i187,  i188,  i189,
-...   i190,  i191,  i192,  i193,  i194,  i195,  i196,  i197,  i198,
-...   i199,  i200,  i201,  i202,  i203,  i204,  i205,  i206,  i207,
-...   i208,  i209,  i210,  i211,  i212,  i213,  i214,  i215,  i216,
-...   i217,  i218,  i219,  i220,  i221,  i222,  i223,  i224,  i225,
-...   i226,  i227,  i228,  i229,  i230,  i231,  i232,  i233,  i234,
-...   i235,  i236,  i237,  i238,  i239,  i240,  i241,  i242,  i243,
-...   i244,  i245,  i246,  i247,  i248,  i249,  i250,  i251,  i252,
-...   i253,  i254,  i255)
+>>> def g(*args, **kwargs):
+...     print args, sorted(kwargs.items())
+>>> g(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
+...   20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
+...   38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55,
+...   56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73,
+...   74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91,
+...   92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107,
+...   108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121,
+...   122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135,
+...   136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149,
+...   150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163,
+...   164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177,
+...   178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191,
+...   192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205,
+...   206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219,
+...   220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233,
+...   234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247,
+...   248, 249, 250, 251, 252, 253, 254)  # doctest: +ELLIPSIS
+(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ..., 252, 253, 254) []
+>>> g(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
+...   20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
+...   38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55,
+...   56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73,
+...   74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91,
+...   92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107,
+...   108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121,
+...   122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135,
+...   136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149,
+...   150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163,
+...   164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177,
+...   178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191,
+...   192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205,
+...   206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219,
+...   220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233,
+...   234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247,
+...   248, 249, 250, 251, 252, 253, 254, 255)
 Traceback (most recent call last):
   File "<doctest test.test_syntax[25]>", line 1
 SyntaxError: more than 255 arguments
 
-The actual error cases counts positional arguments, keyword arguments,
-and generator expression arguments separately.  This test combines the
-three.
-
->>> f(i0,  i1,  i2,  i3,  i4,  i5,  i6,  i7,  i8,  i9,  i10,  i11,
-...   i12,  i13,  i14,  i15,  i16,  i17,  i18,  i19,  i20,  i21,  i22,
-...   i23,  i24,  i25,  i26,  i27,  i28,  i29,  i30,  i31,  i32,  i33,
-...   i34,  i35,  i36,  i37,  i38,  i39,  i40,  i41,  i42,  i43,  i44,
-...   i45,  i46,  i47,  i48,  i49,  i50,  i51,  i52,  i53,  i54,  i55,
-...   i56,  i57,  i58,  i59,  i60,  i61,  i62,  i63,  i64,  i65,  i66,
-...   i67,  i68,  i69,  i70,  i71,  i72,  i73,  i74,  i75,  i76,  i77,
-...   i78,  i79,  i80,  i81,  i82,  i83,  i84,  i85,  i86,  i87,  i88,
-...   i89,  i90,  i91,  i92,  i93,  i94,  i95,  i96,  i97,  i98,  i99,
-...   i100,  i101,  i102,  i103,  i104,  i105,  i106,  i107,  i108,
-...   i109,  i110,  i111,  i112,  i113,  i114,  i115,  i116,  i117,
-...   i118,  i119,  i120,  i121,  i122,  i123,  i124,  i125,  i126,
-...   i127,  i128,  i129,  i130,  i131,  i132,  i133,  i134,  i135,
-...   i136,  i137,  i138,  i139,  i140,  i141,  i142,  i143,  i144,
-...   i145,  i146,  i147,  i148,  i149,  i150,  i151,  i152,  i153,
-...   i154,  i155,  i156,  i157,  i158,  i159,  i160,  i161,  i162,
-...   i163,  i164,  i165,  i166,  i167,  i168,  i169,  i170,  i171,
-...   i172,  i173,  i174,  i175,  i176,  i177,  i178,  i179,  i180,
-...   i181,  i182,  i183,  i184,  i185,  i186,  i187,  i188,  i189,
-...   i190,  i191,  i192,  i193,  i194,  i195,  i196,  i197,  i198,
-...   i199,  i200,  i201,  i202,  i203,  i204,  i205,  i206,  i207,
-...   i208,  i209,  i210,  i211,  i212,  i213,  i214,  i215,  i216,
-...   i217,  i218,  i219,  i220,  i221,  i222,  i223,  i224,  i225,
-...   i226,  i227,  i228,  i229,  i230,  i231,  i232,  i233,  i234,
-...   i235, i236,  i237,  i238,  i239,  i240,  i241,  i242,  i243,
-...   (x for x in i244),  i245,  i246,  i247,  i248,  i249,  i250,  i251,
-...    i252=1, i253=1,  i254=1,  i255=1)
-Traceback (most recent call last):
-  File "<doctest test.test_syntax[26]>", line 1
+>>> g(a000=0, a001=1, a002=2, a003=3, a004=4, a005=5, a006=6, a007=7, a008=8,
+...   a009=9, a010=10, a011=11, a012=12, a013=13, a014=14, a015=15, a016=16,
+...   a017=17, a018=18, a019=19, a020=20, a021=21, a022=22, a023=23, a024=24,
+...   a025=25, a026=26, a027=27, a028=28, a029=29, a030=30, a031=31, a032=32,
+...   a033=33, a034=34, a035=35, a036=36, a037=37, a038=38, a039=39, a040=40,
+...   a041=41, a042=42, a043=43, a044=44, a045=45, a046=46, a047=47, a048=48,
+...   a049=49, a050=50, a051=51, a052=52, a053=53, a054=54, a055=55, a056=56,
+...   a057=57, a058=58, a059=59, a060=60, a061=61, a062=62, a063=63, a064=64,
+...   a065=65, a066=66, a067=67, a068=68, a069=69, a070=70, a071=71, a072=72,
+...   a073=73, a074=74, a075=75, a076=76, a077=77, a078=78, a079=79, a080=80,
+...   a081=81, a082=82, a083=83, a084=84, a085=85, a086=86, a087=87, a088=88,
+...   a089=89, a090=90, a091=91, a092=92, a093=93, a094=94, a095=95, a096=96,
+...   a097=97, a098=98, a099=99, a100=100, a101=101, a102=102, a103=103,
+...   a104=104, a105=105, a106=106, a107=107, a108=108, a109=109, a110=110,
+...   a111=111, a112=112, a113=113, a114=114, a115=115, a116=116, a117=117,
+...   a118=118, a119=119, a120=120, a121=121, a122=122, a123=123, a124=124,
+...   a125=125, a126=126, a127=127, a128=128, a129=129, a130=130, a131=131,
+...   a132=132, a133=133, a134=134, a135=135, a136=136, a137=137, a138=138,
+...   a139=139, a140=140, a141=141, a142=142, a143=143, a144=144, a145=145,
+...   a146=146, a147=147, a148=148, a149=149, a150=150, a151=151, a152=152,
+...   a153=153, a154=154, a155=155, a156=156, a157=157, a158=158, a159=159,
+...   a160=160, a161=161, a162=162, a163=163, a164=164, a165=165, a166=166,
+...   a167=167, a168=168, a169=169, a170=170, a171=171, a172=172, a173=173,
+...   a174=174, a175=175, a176=176, a177=177, a178=178, a179=179, a180=180,
+...   a181=181, a182=182, a183=183, a184=184, a185=185, a186=186, a187=187,
+...   a188=188, a189=189, a190=190, a191=191, a192=192, a193=193, a194=194,
+...   a195=195, a196=196, a197=197, a198=198, a199=199, a200=200, a201=201,
+...   a202=202, a203=203, a204=204, a205=205, a206=206, a207=207, a208=208,
+...   a209=209, a210=210, a211=211, a212=212, a213=213, a214=214, a215=215,
+...   a216=216, a217=217, a218=218, a219=219, a220=220, a221=221, a222=222,
+...   a223=223, a224=224, a225=225, a226=226, a227=227, a228=228, a229=229,
+...   a230=230, a231=231, a232=232, a233=233, a234=234, a235=235, a236=236,
+...   a237=237, a238=238, a239=239, a240=240, a241=241, a242=242, a243=243,
+...   a244=244, a245=245, a246=246, a247=247, a248=248, a249=249, a250=250,
+...   a251=251, a252=252, a253=253, a254=254)  # doctest: +ELLIPSIS
+() [('a000', 0), ('a001', 1), ('a002', 2), ..., ('a253', 253), ('a254', 254)]
+>>> g(a000=0, a001=1, a002=2, a003=3, a004=4, a005=5, a006=6, a007=7, a008=8,
+...   a009=9, a010=10, a011=11, a012=12, a013=13, a014=14, a015=15, a016=16,
+...   a017=17, a018=18, a019=19, a020=20, a021=21, a022=22, a023=23, a024=24,
+...   a025=25, a026=26, a027=27, a028=28, a029=29, a030=30, a031=31, a032=32,
+...   a033=33, a034=34, a035=35, a036=36, a037=37, a038=38, a039=39, a040=40,
+...   a041=41, a042=42, a043=43, a044=44, a045=45, a046=46, a047=47, a048=48,
+...   a049=49, a050=50, a051=51, a052=52, a053=53, a054=54, a055=55, a056=56,
+...   a057=57, a058=58, a059=59, a060=60, a061=61, a062=62, a063=63, a064=64,
+...   a065=65, a066=66, a067=67, a068=68, a069=69, a070=70, a071=71, a072=72,
+...   a073=73, a074=74, a075=75, a076=76, a077=77, a078=78, a079=79, a080=80,
+...   a081=81, a082=82, a083=83, a084=84, a085=85, a086=86, a087=87, a088=88,
+...   a089=89, a090=90, a091=91, a092=92, a093=93, a094=94, a095=95, a096=96,
+...   a097=97, a098=98, a099=99, a100=100, a101=101, a102=102, a103=103,
+...   a104=104, a105=105, a106=106, a107=107, a108=108, a109=109, a110=110,
+...   a111=111, a112=112, a113=113, a114=114, a115=115, a116=116, a117=117,
+...   a118=118, a119=119, a120=120, a121=121, a122=122, a123=123, a124=124,
+...   a125=125, a126=126, a127=127, a128=128, a129=129, a130=130, a131=131,
+...   a132=132, a133=133, a134=134, a135=135, a136=136, a137=137, a138=138,
+...   a139=139, a140=140, a141=141, a142=142, a143=143, a144=144, a145=145,
+...   a146=146, a147=147, a148=148, a149=149, a150=150, a151=151, a152=152,
+...   a153=153, a154=154, a155=155, a156=156, a157=157, a158=158, a159=159,
+...   a160=160, a161=161, a162=162, a163=163, a164=164, a165=165, a166=166,
+...   a167=167, a168=168, a169=169, a170=170, a171=171, a172=172, a173=173,
+...   a174=174, a175=175, a176=176, a177=177, a178=178, a179=179, a180=180,
+...   a181=181, a182=182, a183=183, a184=184, a185=185, a186=186, a187=187,
+...   a188=188, a189=189, a190=190, a191=191, a192=192, a193=193, a194=194,
+...   a195=195, a196=196, a197=197, a198=198, a199=199, a200=200, a201=201,
+...   a202=202, a203=203, a204=204, a205=205, a206=206, a207=207, a208=208,
+...   a209=209, a210=210, a211=211, a212=212, a213=213, a214=214, a215=215,
+...   a216=216, a217=217, a218=218, a219=219, a220=220, a221=221, a222=222,
+...   a223=223, a224=224, a225=225, a226=226, a227=227, a228=228, a229=229,
+...   a230=230, a231=231, a232=232, a233=233, a234=234, a235=235, a236=236,
+...   a237=237, a238=238, a239=239, a240=240, a241=241, a242=242, a243=243,
+...   a244=244, a245=245, a246=246, a247=247, a248=248, a249=249, a250=250,
+...   a251=251, a252=252, a253=253, a254=254, a255=255)
+Traceback (most recent call last):
+  File "<doctest test.test_syntax[35]>", line 1
+SyntaxError: more than 255 arguments
+
+>>> class C:
+...     def meth(self, *args):
+...         return args
+>>> obj = C()
+>>> obj.meth(
+...   0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
+...   20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
+...   38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55,
+...   56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73,
+...   74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91,
+...   92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107,
+...   108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121,
+...   122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135,
+...   136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149,
+...   150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163,
+...   164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177,
+...   178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191,
+...   192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205,
+...   206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219,
+...   220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233,
+...   234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247,
+...   248, 249, 250, 251, 252, 253, 254)  # doctest: +ELLIPSIS
+(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ..., 252, 253, 254)
+>>> obj.meth(
+...   0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
+...   20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
+...   38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55,
+...   56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73,
+...   74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91,
+...   92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107,
+...   108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121,
+...   122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135,
+...   136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149,
+...   150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163,
+...   164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177,
+...   178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191,
+...   192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205,
+...   206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219,
+...   220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233,
+...   234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247,
+...   248, 249, 250, 251, 252, 253, 254, 255)
+Traceback (most recent call last):
+  File "<doctest test.test_syntax[38]>", line 1
 SyntaxError: more than 255 arguments
 
 >>> f(lambda x: x[0] = 3)
@@ -403,6 +508,16 @@ build.  The number of blocks must be greater than CO_MAXBLOCKS.  SF #1565514
      ...
    SyntaxError: too many statically nested blocks
 
+Misuse of the global statement can lead to a few unique syntax errors.
+
+   >>> def f(x):
+   ...     global x
+   ... # doctest: +ELLIPSIS
+   Traceback (most recent call last):
+     ...
+   SyntaxError: name 'x' is local and global (<doctest ...>, line 1)
+
+
 This tests assignment-context; there was a bug in Python 2.5 where compiling
 a complex 'if' (one with 'elif') would fail to notice an invalid suite,
 leading to spurious errors.
@@ -458,6 +573,18 @@ leading to spurious errors.
      File "<doctest test.test_syntax[48]>", line 6
    SyntaxError: can't assign to function call
 
+Test the "raise X, Y[, Z]" form:
+
+   >>> raise ArithmeticError, 'bad number'
+   Traceback (most recent call last):
+     ...
+   ArithmeticError: bad number
+   >>> raise ArithmeticError, 'bad number', None
+   Traceback (most recent call last):
+     ...
+   ArithmeticError: bad number
+
+
 >>> f(a=23, a=234)
 Traceback (most recent call last):
   ...
@@ -476,6 +603,12 @@ Traceback (most recent call last):
    File "<doctest test.test_syntax[50]>", line 1
 SyntaxError: can't assign to literal
 
+Corner-case that used to fail to raise the correct error:
+
+    >>> def f(x=lambda __debug__:0): pass
+    Traceback (most recent call last):
+    SyntaxError: cannot assign to __debug__
+
 Corner-case that used to crash:
 
     >>> def f(*xx, **__debug__): pass
@@ -488,12 +621,12 @@ import re
 import unittest
 import warnings
 
-from test import test_support
+from test import support
 
 class SyntaxTestCase(unittest.TestCase):
 
     def _check_error(self, code, errtext,
-                     filename="<testcase>", mode="exec", subclass=None):
+                     filename="<testcase>", mode="exec", subclass=None, lineno=None, offset=None):
         """Check that compiling code raises SyntaxError with errtext.
 
         errtest is a regular expression that must be present in the
@@ -501,13 +634,19 @@ class SyntaxTestCase(unittest.TestCase):
         is the expected subclass of SyntaxError (e.g. IndentationError).
         """
         try:
-            compile(code, filename, mode)
-        except SyntaxError, err:
+            compile(code, filename or "<testcase>", mode)
+        except SyntaxError as err:
             if subclass and not isinstance(err, subclass):
                 self.fail("SyntaxError is not a %s" % subclass.__name__)
             mo = re.search(errtext, str(err))
             if mo is None:
                 self.fail("%s did not contain '%r'" % (err, errtext,))
+            if filename is not None:
+                self.assertEqual(err.filename, filename)
+            if lineno is not None:
+                self.assertEqual(err.lineno, lineno)
+            if offset is not None:
+                self.assertEqual(err.offset, offset)
         else:
             self.fail("compile() did not raise SyntaxError")
 
@@ -515,6 +654,11 @@ class SyntaxTestCase(unittest.TestCase):
         self._check_error("def f((x)=23): pass",
                           "parenthesized arg with default")
 
+    def test_assign_repr(self):
+        with support.check_py3k_warnings(('backquote not supported',
+                                          SyntaxWarning)):
+            self._check_error("`1` = 1", "assign to repr")
+
     def test_assign_call(self):
         self._check_error("f() = 1", "assign")
 
@@ -524,28 +668,48 @@ class SyntaxTestCase(unittest.TestCase):
     def test_global_err_then_warn(self):
         # Bug tickler:  The SyntaxError raised for one global statement
         # shouldn't be clobbered by a SyntaxWarning issued for a later one.
-        source = re.sub('(?m)^ *:', '', """\
-            :def error(a):
-            :    global a  # SyntaxError
-            :def warning():
-            :    b = 1
-            :    global b  # SyntaxWarning
-            :""")
-        warnings.filterwarnings(action='ignore', category=SyntaxWarning)
-        self._check_error(source, "global")
-        warnings.filters.pop(0)
+        source = """if 1:
+            def error(a):
+                global a  # SyntaxError
+            def warning():
+                b = 1
+                global b  # SyntaxWarning
+            """
+        with support.check_warnings((".*assigned to before global declaration",
+                                     SyntaxWarning)):
+            self._check_error(source, "local and global", lineno=2)
+
+    def test_misuse_global(self):
+        source = """if 1:
+            def f():
+                print(x)
+                global x
+            """
+        with support.check_warnings(('.*used prior to global declaration',
+                                     SyntaxWarning)):
+            compile(source, '<testcase>', 'exec')
+
+    def test_misuse_global_2(self):
+        source = """if 1:
+            def f():
+                x = 1
+                global x
+            """
+        with support.check_warnings(('.*assigned to before global declaration',
+                                     SyntaxWarning)):
+            compile(source, '<testcase>', 'exec')
 
     def test_break_outside_loop(self):
         self._check_error("break", "outside loop")
 
     def test_delete_deref(self):
-        source = re.sub('(?m)^ *:', '', """\
-            :def foo(x):
-            :  def bar():
-            :    print x
-            :  del x
-            :""")
-        self._check_error(source, "nested scope")
+        source = """if 1:
+            def foo(x):
+                def bar():
+                    print(x)
+                del x
+            """
+        self._check_error(source, "nested scope", filename=None)
 
     def test_unexpected_indent(self):
         self._check_error("foo()\n bar()\n", "unexpected indent",
@@ -564,11 +728,9 @@ class SyntaxTestCase(unittest.TestCase):
         self._check_error("int(base=10, '2')", "non-keyword arg")
 
 def test_main():
-    test_support.run_unittest(SyntaxTestCase)
+    support.run_unittest(SyntaxTestCase)
     from test import test_syntax
-    with test_support.check_py3k_warnings(("backquote not supported",
-                                             SyntaxWarning)):
-        test_support.run_doctest(test_syntax, verbosity=True)
+    support.run_doctest(test_syntax, verbosity=True)
 
 if __name__ == "__main__":
     test_main()

Lib/test/test_sys_settrace.py

@@ -619,7 +619,7 @@ class JumpTestCase(unittest.TestCase):
     def test_jump_in_nested_finally_2(output):
         try:
             output.append(2)
-            1/0
+            1.0/0.0
             return
         finally:
             output.append(6)
@@ -630,7 +630,7 @@ class JumpTestCase(unittest.TestCase):
     def test_jump_in_nested_finally_3(output):
         try:
             output.append(2)
-            1/0
+            1.0/0.0
             return
         finally:
             output.append(6)
@@ -697,7 +697,7 @@ class JumpTestCase(unittest.TestCase):
     @jump_test(5, 7, [4, 7, 8])
     def test_jump_between_except_blocks(output):
         try:
-            1/0
+            1.0/0.0
         except ZeroDivisionError:
             output.append(4)
             output.append(5)
@@ -708,7 +708,7 @@ class JumpTestCase(unittest.TestCase):
     @jump_test(5, 6, [4, 6, 7])
     def test_jump_within_except_block(output):
         try:
-            1/0
+            1.0/0.0
         except:
             output.append(4)
             output.append(5)