小编use*_*471的帖子

当我跑

    pip install --upgrade pip

我收到此错误消息：

    Collecting pip
    Downloading pip-8.1.0-py2.py3-none-any.whl (1.2MB)
    100% |????????????????????????????????| 1.2MB 371kB/s 
    Installing collected packages: pip
    Found existing installation: pip 8.0.2
    Uninstalling pip-8.0.2:
    Exception:
    Traceback (most recent call last):
    File "/Library/Python/2.7/site-packages/pip/basecommand.py", line       209, in main
    status = self.run(options, args)
    File "/Library/Python/2.7/site-packages/pip/commands/install.py", line 317, in run
    prefix=options.prefix_path,
    File "/Library/Python/2.7/site-packages/pip/req/req_set.py", line  725, in install
    requirement.uninstall(auto_confirm=True)
    File "/Library/Python/2.7/site-packages/pip/req/req_install.py", line 752, in uninstall
    paths_to_remove.remove(auto_confirm)
    File "/Library/Python/2.7/site-packages/pip/req/req_uninstall.py",line 115, in remove
    renames(path, new_path)
    File "/Library/Python/2.7/site-packages/pip/utils/__init__.py", line 266,   in renames
    shutil.move(old, new)
    File"/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line …

当我尝试时 os.system("open " + 'myfile.xlsx')
我得到输出'0'

类似地，尝试
os.system("start excel.exe myfilepath")
给出结果 32512

我已经导入了操作系统和系统，并且在Mac上。如何更改此设置，以使其确实启动该excel文件？出于好奇，它打印出的数字是什么意思？

谢谢！