SylvainDe / DidYouMean-Python

        version = (3, 0)

        version2 = (3, 4)

        self.runs(code, up_to_version(version))

        self.throws(code, INVALIDSYNTAX, [], (version, version2))

        self.throws(code, INVALIDSYNTAX, [], from_version(version2))

        self.runs(new_code)

    def test_exec(self):

        """exec is a functions now and needs parenthesis."""

        # NICE_TO_HAVE

        code, new_code = 'exec "1"', 'exec("1")'

        version = (3, 0)

        version2 = (3, 4)

        self.runs(code, up_to_version(version))

        self.throws(code, INVALIDSYNTAX, [], (version, version2))

        self.throws(code, INVALIDSYNTAX, [], from_version(version2))

        self.runs(new_code)

    def test_old_comparison(self):

        """<> comparison is removed, != always works."""

        code = '1 {0} 2'

        old, new = '<>', '!='

        version = (3, 0)

        old_code, new_code = format_str(code, old, new)

        self.runs(old_code, up_to_version(version))

        self.throws(

        old_code, new_code1, new_code2 = format_str(code, old, sugg1, sugg2)

        version = (3, 0)

        self.runs(old_code, up_to_version(version))

        self.throws(

            old_code,

            ATTRIBUTEERROR,

            ["'" + sugg1 + "'", "'" + sugg2 + "'", "'writelines'"],

            from_version(version))

        self.runs(new_code1)

        self.runs(new_code2)

    def test_removed_function_attributes(self):

        """Some functions attributes are removed."""

        # NICE_TO_HAVE

        version = (3, 0)

        code = func_gen() + 'some_func.{0}'

        attributes = [('func_name', '__name__', []),

                      ('func_doc', '__doc__', []),

                      ('func_defaults', '__defaults__', ["'__defaults__'"]),

                      ('func_dict', '__dict__', []),

                      ('func_closure', '__closure__', []),

                      ('func_globals', '__globals__', []),

                      ('func_code', '__code__', [])]

        for (old_att, new_att, sugg) in attributes:

            old_code, new_code = format_str(code, old_att, new_att)

            self.runs(old_code, up_to_version(version))