无法升级点子 [英] Unable to upgrade pip

问题描述

我想安装一些库来学习机器学习.我说的是我需要升级pip，但是当我尝试安装它时

I wanted to install some libraries to learn machine learning. I say's that i need to upgrade pip, but when i tried to install it

$ pip install --upgrade pip
Collecting pip
  Using cached pip-9.0.1-py2.py3-none-any.whl
Installing collected packages: pip
  Found existing installation: pip 8.1.2
    Uninstalling pip-8.1.2:
Exception:
Traceback (most recent call last):
  File "/Library/Python/2.7/site-packages/pip/basecommand.py", line 215, 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 736, in install
    requirement.uninstall(auto_confirm=True)
  File "/Library/Python/2.7/site-packages/pip/req/req_install.py", line 742, 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 267, in renames
    shutil.move(old, new)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 303, in move
    os.unlink(src)
OSError: [Errno 13] Permission denied: '/Library/Python/2.7/site-packages/pip-8.1.2.dist-info/DESCRIPTION.rst'
You are using pip version 8.1.2, however version 9.0.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

推荐答案

除非使用virtualenv，否则必须使用sudo运行它.问题是您无权更改该模块.使用sudo，您授予管理员更新权限.

You have to run it with sudo unless you are using a virtualenv. The problem is that you don't have the permission to change that module. With sudo, you are giving administrator's permissions to update it.

sudo pip install --upgrade pip

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