test_format.py 文件源码

def test_too_long(self):
        # GH 10451
        with pd.option_context('display.precision', 4):
            # need both a number > 1e6 and something that normally formats to
            # having length > display.precision + 6
            df = pd.DataFrame(dict(x=[12345.6789]))
            self.assertEqual(str(df), '            x\n0  12345.6789')
            df = pd.DataFrame(dict(x=[2e6]))
            self.assertEqual(str(df), '           x\n0  2000000.0')
            df = pd.DataFrame(dict(x=[12345.6789, 2e6]))
            self.assertEqual(
                str(df), '            x\n0  1.2346e+04\n1  2.0000e+06')