Question

我在Amazon EC2上使用Linux AMI，我想安装numpy和scipy。从理论上讲，它应该是非常简单的，但我会遇到问题。

以下是我的步骤：

> sudo alternatives --set python /usr/bin/python3.4
> sudo virtualenv -p python3.4 my_env
> sudo chmod -R 777 my_env
> . my_env/bin/activate
> pip install numpy

安装numpy会返回：

Collecting numpy
  Using cached numpy-1.10.1.tar.gz
Installing collected packages: numpy
  Running setup.py install for numpy
Successfully installed numpy

但它似乎不起作用，因为运行pip freeze和pip list并未显示numpy的任何痕迹。当我尝试运行pip install scipy：

时，我错过了这个包的事实是显而易见的

Collecting scipy
  Using cached scipy-0.16.1.tar.gz
Collecting numpy>=1.6.2 (from scipy)
  Using cached numpy-1.10.1.tar.gz
Installing collected packages: numpy, scipy
  Running setup.py install for numpy
 ImportError: No module named 'numpy'  Running setup.py install for scipy
    Complete output from command /usr/lib/python3.4/my_env/bin/python3.4 -c "import setuptools, tokenize;__file__='/tmp/pip-build-wq1cn43p/scipy/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-mjftl3bs-record/install-record.txt --single-version-externally-managed --compile --install-headers /usr/lib/python3.4/my_env/include/site/python3.4/scipy:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-wq1cn43p/scipy/setup.py", line 253, in <module>
        setup_package()
      File "/tmp/pip-build-wq1cn43p/scipy/setup.py", line 241, in setup_package
        from numpy.distutils.core import setup
    ImportError: No module named 'numpy'

我有最新的点子版本7.1.2。

Answer 1

当你设置virtualenv使用python3时，你还必须使用pip3

virtualenv -p python3.4 env
source env/bin/activate
pip3 install numpy

pip install numpy - 尽管没有错误但无法安装

1 个答案: