小编N3u*_*r0n的帖子

尝试安装pip,我在https://github.com/Homebrew/homebrew/wiki/Homebrew-and-Python之后收到此错误

Sumners-MacBook-Pro:Downloads Sumner$ python get-pip.py
Downloading/unpacking pip
  Downloading pip-1.5.4-py2.py3-none-any.whl (1.2MB): 1.2MB downloaded
Installing collected packages: pip
Cleaning up...
Exception:
Traceback (most recent call last):
  File "/var/folders/l6/0vw_83pn3kq52x2wjhkmns2r0000gn/T/tmpAovvNy/pip.zip/pip/basecommand.py", line 122, in main
    status = self.run(options, args)
  File "/var/folders/l6/0vw_83pn3kq52x2wjhkmns2r0000gn/T/tmpAovvNy/pip.zip/pip/commands/install.py", line 279, in run
    requirement_set.install(install_options, global_options, root=options.root_path)
  File "/var/folders/l6/0vw_83pn3kq52x2wjhkmns2r0000gn/T/tmpAovvNy/pip.zip/pip/req.py", line 1380, in install
    requirement.install(install_options, global_options, *args, **kwargs)
  File "/var/folders/l6/0vw_83pn3kq52x2wjhkmns2r0000gn/T/tmpAovvNy/pip.zip/pip/req.py", line 664, in install
    self.move_wheel_files(self.source_dir, root=root)
  File "/var/folders/l6/0vw_83pn3kq52x2wjhkmns2r0000gn/T/tmpAovvNy/pip.zip/pip/req.py", line 894, in move_wheel_files
    pycompile=self.pycompile,
  File "/var/folders/l6/0vw_83pn3kq52x2wjhkmns2r0000gn/T/tmpAovvNy/pip.zip/pip/wheel.py", line 202, in move_wheel_files
    clobber(source, lib_dir, True)
  File …

所以我想跟踪用户想要循环的方向.因此,我有一个分段控件来选择方向.

这是代码:

@IBOutlet weak var cycleSwitch: UISegmentedControl!
@IBAction func setCycleDirection(sender: AnyObject) {

        switch cycleSwitch.selectedSegmentIndex
            {
        case 0:
            cycleDirection = cycleSwitch.selectedSegmentIndex
        case 1:
            cycleDirection = cycleSwitch.selectedSegmentIndex
        default:
            break
        }
    println(cycleDirection)
}

但什么都没打印出来.即使我评论所有内容并且只是有一个println("我在行动中")也不会记录.我也尝试过这个if语句,例如cycleSwitch.selectedSegmentIndex == 0等.两者都不起作用.

关于价值观不会改变的任何建议或想法？