__init__.py 文件源码

def testExtractConst(self):
        if not hasattr(dep, 'extract_constant'):
            # skip on non-bytecode platforms
            return

        def f1():
            global x, y, z
            x = "test"
            y = z

        fc = func_code(f1)

        # unrecognized name
        assert dep.extract_constant(fc,'q', -1) is None

        # constant assigned
        dep.extract_constant(fc,'x', -1) == "test"

        # expression assigned
        dep.extract_constant(fc,'y', -1) == -1

        # recognized name, not assigned
        dep.extract_constant(fc,'z', -1) is None