Python nosetests的范例文档里有个unittest函数,里面的self.assert-(1 == 1)的意

Python nosetests的范例文档里有个unittest函数,里面的self.assert_(1 == 1)的意思?其实意思我明白,但是有这个语法吗?我只知道assert 1==1,程序如下：###### the standard unittest-derived test###import unittestclass ExampleTest(unittest.TestCase):def test_a(self):self.assert_(1 == 1) ###### an unparented test -- no encapsulating class,just any fn starting with### 'test'.###def test_b():"""Raw,unparented test."""assert 'b' == 'b'###### non-unittest derived test -- class is instantiated,then functions### starting with 'test' are executed.###class TestExampleTwo:def test_c(self):assert 'c' == 'c'