python - 使用 pip3 升级 cvxpy 失败

Question

我在使用 pip3 升级 cvxpy 时遇到了这个错误。有人知道如何解决这个问题吗？谢谢。该平台是 OS X 10.11.2。

Collecting cvxpy
  Using cached cvxpy-0.3.5.tar.gz
Requirement already satisfied (use --upgrade to upgrade): cvxopt>=1.1.6 in /usr/local/lib/python3.5/site-packages (from cvxpy)
Requirement already satisfied (use --upgrade to upgrade): ecos>=2 in /usr/local/lib/python3.5/site-packages (from cvxpy)
Requirement already satisfied (use --upgrade to upgrade): scs>=1.1.3 in /usr/local/lib/python3.5/site-packages (from cvxpy)
Collecting multiprocess (from cvxpy)
  Using cached multiprocess-0.70.3.tgz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 20, in <module>
      File "/private/var/folders/94/v_wjnx7x62n8x7dfr_734zy80000gn/T/pip-build-bwub59jx/multiprocess/setup.py", line 66, in <module>
        meta_fh = open(os.path.join(here, '%s/__init__.py' % libdir))
    FileNotFoundError: [Errno 2] No such file or directory: '/private/var/folders/94/v_wjnx7x62n8x7dfr_734zy80000gn/T/pip-build-bwub59jx/multiprocess/py3.5/multiprocess/__init__.py'

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/94/v_wjnx7x62n8x7dfr_734zy80000gn/T/pip-build-bwub59jx/multiprocess

Answer 1

您使用的是 Python 3.5 吗？

如果是这样，似乎对 multiprocess 的依赖还没有更新到 python 3.5。但是 3.4 的安装脚本对我有用:

1. 转到 https://pypi.python.org/pypi/multiprocess并下载 0.70.3.tgz 文件(页面底部)
2. tar -xvzf multiprocess-0.70.3.tgz
3. cd multiprocess-0.70.3 然后 mv py3.4 py3.5
4. python3 setup.py build
5. python3 setup.py 安装
6. pip3 安装 cvxpy
7. pip3 安装 nose
8. nosetests cvxpy 现在应该可以工作了。