test_posix.py 文件源码

def test_nic_names(self):
        p = subprocess.Popen("ifconfig -a", shell=1, stdout=subprocess.PIPE)
        output = p.communicate()[0].strip()
        if p.returncode != 0:
            raise unittest.SkipTest('ifconfig returned no output')
        if PY3:
            output = str(output, sys.stdout.encoding)
        for nic in psutil.net_io_counters(pernic=True).keys():
            for line in output.split():
                if line.startswith(nic):
                    break
            else:
                self.fail(
                    "couldn't find %s nic in 'ifconfig -a' output\n%s" % (
                        nic, output))

    # can't find users on APPVEYOR or TRAVIS