小编use*_*650的帖子

ginnyweasley:~ s66$ sudo port selfupdate
Password:
--->  Updating MacPorts base sources using rsync
Error: /opt/local/bin/port: port selfupdate failed: Error synchronizing MacPorts sources: command execution failed

我试图重新下载macports,它似乎仍然无法正常工作.我也尝试过没有sudo,它仍然无法正常工作.有没有人有这个问题的解决方案？谢谢.

这是我第一次进行单元测试,我正在尝试运行一个简单的代码......

import random
import unittest

class TestSequenceFunctions(unittest.TestCase):

    def setUp(self):
        self.seq = range(10)

    def test_shuffle(self):
        # make sure the shuffled sequence does not lose any elements
        random.shuffle(self.seq)
        self.seq.sort()
        self.assertEqual(self.seq, range(10))

        # should raise an exception for an immutable sequence
        self.assertRaises(TypeError, random.shuffle, (1,2,3))

    def test_choice(self):
        element = random.choice(self.seq)
        self.assertTrue(element in self.seq)

    def test_sample(self):
        with self.assertRaises(ValueError):
            random.sample(self.seq, 20)
        for element in random.sample(self.seq, 5):
            self.assertTrue(element in self.seq)

suite = unittest.TestLoader().loadTestsFromTestCase(TestSequenceFunctions)
unittest.TextTestRunner(verbosity=2).run(suite)

然后我收到错误信息......

Traceback (most recent call last):
  File "/Users/s66/Desktop/unittest.py", line 2, in <module>
    import …