pip install numpy (python 2.7) fails with errorcode 1

Question

I'm installing numpy through pip on python 2.7.9... I checked pip list , and it returns pip (1.5.6), setuptools (12.0.4) . I'm running on Windows 7 64-bit, and I've tried both Python 32 and 64-bit versions.

pip install numpy ends with:

Command C:\Python27\python.exe -c "import setuptools, tokenize;__file__='c:\\users\\jon\\appdata\\local\\temp\\pip_build_jon\\numpy\\setup.py';exec(compile(getattr(tokenize, 'open', open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record c:\users\jon\appdata\local\temp\pip-qnynnf-record\install-record.txt --single-version-externally-managed 

--compile failed with error code 1 in c:\users\jon\appdata\local\temp\pip_build_jon\numpyStoring 

debug log for failure in C:\Users\jon\pip\pip.log

When I checked stackoverflow for other posts about errorcode 1, their solutions were to make sure you have an up-to-date version of setuptools . I installed Python 2.7.9 from the main website, and it comes with both setuptools and pip ready to go. Plus I made sure my system had them installed by checking pip list .

So instead I looked up the debug log the console error told me to go to, at C:\\Users\\jon\\pip\\pip.log . It's quite lengthy, but near the end it says

error: Microsoft Visual C++ 9.0 is required (Unable to find vcvarsall.bat). Get it from http://aka.ms/vcpython27

I went to that url, downloaded the compiler, and ran pip install numpy again. It didn't throw errorcode 1 this time, but had a different issue. It printed a huge wall of text to the screen, which never happened the last time I installed numpy/matplotlib/etc. It printed the text for a few minutes, then froze and stopped.

I'm not sure how to proceed?

If it helps I can post the pip debug log.

Answer 1

Download the wheel (.whl file) file from here and install with pip:

1. pip install wheel to install support for wheel files.
2. pip install numpy‑1.9.1+mkl‑cp27‑none‑win32.whl to install the wheel.