test_pkgimport.py 文件源码

def __init__(self, *args, **kw):
        self.package_name = 'PACKAGE_'
        while self.package_name in sys.modules:
            self.package_name += random.choose(string.ascii_letters)
        self.module_name = self.package_name + '.foo'
        unittest.TestCase.__init__(self, *args, **kw)