How to install numpy on windows using pip install?

问题:

I want to install numpy using pip install numpy command but i get follwing error:

RuntimeError: Broken toolchain: cannot link a simple C program

I'm using windows 7 32bit, python 2.7.9, pip 6.1.1 and some MSVC compiler. I think it uses compiler from Visual C++ 2010 Express, but actually I'm not sure which one because I have several visual studio installations.

I know that there are prebuilt packages for windows but I want to figure out if there is some way to do it just by typing pip install numpy?

Edit: I think that there could be other packages which must be compiled before usage, so it's not only about numpy. I want to solve the problem with my compiler so I could easily install any other similar package without necessity to search for prebuilt packages (and hope that there are some at all)

回答1:

Installing extension modules can be an issue with pip. This is why conda exists. conda is an open-source BSD-licensed cross-platform package manager. It can easily install NumPy.

Two options:

• Install Anaconda here
• Install Miniconda here and then go to a command-line and type conda install numpy (make sure your PATH includes the location conda was installed to).

回答2:

Check installation of python 2.7 than install/reinstall pip which described here than open command line and write

pip install numpy

or

pip install scipy

if already installed try this

pip install -U numpy

回答3:

Frustratingly the Numpy package published to PyPI won't install on most Windows computers https://github.com/numpy/numpy/issues/5479

Instead:

1. Download the Numpy wheel for your Python version from http://www.lfd.uci.edu/~gohlke/pythonlibs/#numpy
2. Install it from the command line pip install numpy-1.10.2+mkl-cp35-none-win_amd64.whl

回答4:

As of March 2016, pip install numpy works on Windows without a Fortran compiler. See here.

pip install scipy still tries to use a compiler.

July 2018: mojoken reports pip install scipy working on Windows without a Fortran compiler.

回答5:

py -m pip install numpy

Worked for me!

回答6:

First go through this link https://www.python.org/downloads/ to download python 3.6.1 or 2.7.13 either of your choice.I preferred to use python 2.7 or 3.4.4 .now after installation go to the folder name python27/python34 then click on script now here open the command prompt by left click ad run as administration. After the command prompt appear write their "pip install numpy" this will install the numpy latest version and installing it will show success comment that's all. Similarly matplotlib can be install by just typing "pip install matplotlip". And now if you want to download scipy then just write "pip install scipy" and if it doesn't work then you need to download python scipy from the link https://sourceforge.net/projects/scipy/ and install it.

回答7:

Install miniconda (here)

After installed, open Anaconda Prompt (search this in Start Menu)

Write:

pip install numpy

After installed, test:

import numpy as np

回答8:

I had the same problem. I decided in a very unexpected way. Just opened the command line as an administrator. And then typed:

pip install numpy