Error: Microsoft Visual C++ 10.0 Is Required (Unable to Find Vcvarsall.Bat) When Running Python Script

Error: Microsoft Visual C++ 10.0 is required (Unable to find vcvarsall.bat) when running Python script

I got the same error and ended up using a pre-built distribution of numpy available in SourceForge (similarly, a distribution of matplotlib can be obtained).

Builds for both 32-bit 2.7 and 3.3/3.4 are available.

PyCharm detected them straight away, of course.

Microsoft Visual C++ 10.0 is required (Unable to find vcvarsall.bat)

I just did the following steps and was able to install the extension via pip. I'm working on Windows 8.1 x64.

1. Install latest Python 3 version using the x86 installer. (x64 is more difficult because VS doesn't include a compiler for x64, see second answer here)

2. Install Visual C++ Studio 2010 Express which can be downloaded from Microsoft (follow this link, the visual studio 2010 downloads are at the bottom of the page. You need to download the C++ release and i think you have to register at Microsoft to be able to download the software).

3. Run py -3 -m pip install ephem to istall ephem. (py -3 -m pip calls pip from your python 3 installation, helpful if you also have python 2 installed)

Worked for me without any problems.

Update 2017:

See the following link that contains information on compiling python on windows:

https://wiki.python.org/moin/WindowsCompilers

Python Pip install Error: Unable to find vcvarsall.bat. Tried all solutions

I have tried all suggestions and found my own simple solution.

The problem is that codes written in external environment like C need compiler. Look for its own VS environment, i.e. VS 2008.

Currently my machine runs VS 2012 and faces Unable to find vcvarsall.bat.
I studied codes that i want to install to find the VS version. It was VS 2008. i have add to system variable VS90COMNTOOLS as variable name and gave the value of VS120COMNTOOLS.

You can find my step by step solution below:

1. Right click on My Computer.
2. Click Properties
3. Advanced system settings
4. Environment variables
5. Add New system variable
6. Enter VS90COMNTOOLS to the variable name
7. Enter the value of current version to the new variable.
8. Close all windows

Now open a new session and pip install your-package

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