Microsoft Visual C++ 10.0 required to install Python package in virtualenv

问题

I was trying to install the bokeh Python package via pip but I was thrown this error:

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

I fixed that error by installing Microsoft Visual C+ and installed successfully after that.

However, now I want to install bokeh inside my virtual environment which I created with virtualenv. My intent is to build a Flask app.

I got the same error again, but this time I have no idea what to do.

Any help would be greatly appreciated.

回答1:

Try opening the MSVisual command prompt, and cd to your virtualenv directory. From there, try installing with pip.

You can also try updating pip, and setuptools in your virtualenv.

I fixed this problem, but I did quite a few things before I did, so I'm not quite sure how I fixed this part of it.

回答2:

for future google users / stack overflow users.

I had a similar error, but I needed Visual C++ 14.0. This error popped up while trying to install a package while venv was running (with the activate.bat script already run)

apparently updating setup tools was the solution. And by that I mean, when I used pip to uninstall uninstalled SoundCard and re-ran setup.py for SoundCard, I received no more errors about v14.0 missing. (This was all with venv running).

I already had Visual C++ Redistributable 2015 v14.0 installed locally. But my venv couldn't find it.

Run this command to update setuptools.