Due to the system limits, I can only use a 64bit version Python, though, some of the modules that I intend to use do not come with a 64bit version (e.g. httplib2). In this case, what am I supposed to do so as to leverage those 32bit functions?

![enter image description here](https://i.stack.imgur.com/zxQH5.png)

Thanks for the answer by j\_mcnally. That works. Another approach that eventually works for me is to use the prefix parameter if there are multi-versions(e.g. 32/64) of python installed:

> 
> python setup.py install --prefix = "your python root directory" 
> 
> 
>