I use miniconda on Windows, and here is how I installed pyQuery:
Download python miniconda from http://conda.pydata.org/miniconda.html (if you need many libraries at once, consider installing anadonda)
Then from the command line, run the following commands:
conda install lxml conda install setuptools
Take the latest pyQuery source from https://codeload.github.com/gawel/pyquery/zip/master and unzip it to a directory.
Again, from the command line, go to this directory and run:
python setup.py install
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