python类compilest()的实例源码

def test_compile_expr(self):
        st = parser.expr('2 + 3')
        code = parser.compilest(st)
        self.assertEqual(eval(code), 5)

def test_compile_suite(self):
        st = parser.suite('x = 2; y = x + 3')
        code = parser.compilest(st)
        globs = {}
        exec code in globs
        self.assertEqual(globs['y'], 5)

def test_compile_error(self):
        st = parser.suite('1 = 3 + 4')
        self.assertRaises(SyntaxError, parser.compilest, st)

def test_compile_badunicode(self):
        st = parser.suite('a = u"\U12345678"')
        self.assertRaises(SyntaxError, parser.compilest, st)
        st = parser.suite('a = u"\u1"')
        self.assertRaises(SyntaxError, parser.compilest, st)

def test_issue_9011(self):
        # Issue 9011: compilation of an unary minus expression changed
        # the meaning of the ST, so that a second compilation produced
        # incorrect results.
        st = parser.expr('-3')
        code1 = parser.compilest(st)
        self.assertEqual(eval(code1), -3)
        code2 = parser.compilest(st)
        self.assertEqual(eval(code2), -3)

def test_compile_expr(self):
        st = parser.expr('2 + 3')
        code = parser.compilest(st)
        self.assertEqual(eval(code), 5)

def test_compile_suite(self):
        st = parser.suite('x = 2; y = x + 3')
        code = parser.compilest(st)
        globs = {}
        exec(code, globs)
        self.assertEqual(globs['y'], 5)

def test_compile_error(self):
        st = parser.suite('1 = 3 + 4')
        self.assertRaises(SyntaxError, parser.compilest, st)

def test_compile_badunicode(self):
        st = parser.suite('a = "\\U12345678"')
        self.assertRaises(SyntaxError, parser.compilest, st)
        st = parser.suite('a = "\\u1"')
        self.assertRaises(SyntaxError, parser.compilest, st)

def test_issue_9011(self):
        # Issue 9011: compilation of an unary minus expression changed
        # the meaning of the ST, so that a second compilation produced
        # incorrect results.
        st = parser.expr('-3')
        code1 = parser.compilest(st)
        self.assertEqual(eval(code1), -3)
        code2 = parser.compilest(st)
        self.assertEqual(eval(code2), -3)