Python: 3.5.2 64bit
  [pip list]
    alabaster (0.7.8)
    Babel (2.3.4)
    click (6.6)
    colorama (0.3.7)
    diff-match-patch (20121119)
    docutils (0.12)
    imagesize (0.7.1)
    Jinja2 (2.8)
    MarkupSafe (0.23)
    pdfrw (0.2)
    Pillow (3.3.0)
    pip (8.1.2)
    Pygments (2.1.3)
    pytz (2016.6.1)
    reportlab (3.3.0)
    setuptools (20.10.1)
    six (1.10.0)
    snowballstemmer (1.2.1)
    Sphinx (1.4.5)
    sphinx-intl (0.9.9)
    translate-toolkit (2.0.0b2)

Python: 2.7.12 64bit
  [pip list]
    alabaster (0.7.8)
    Babel (2.3.4)
    colorama (0.3.7)
    docutils (0.12)
    imagesize (0.7.1)
    Jinja2 (2.8)
    MarkupSafe (0.23)
    pdfrw (0.2)
    Pillow (3.3.0)
    pip (8.1.2)
    Pygments (2.1.3)
    pytz (2016.6.1)
    reportlab (3.3.0)
    rst2pdf (0.93.dev-r0)
    setuptools (20.10.1)
    six (1.10.0)
    snowballstemmer (1.2.1)
    Sphinx (1.4.5)

rst2pdf foo.rst foo.pdf

.make pdf

Extension error:
Could not import extension rst2pdf.pdfbuilder (exception: No module named 'rst2pdf')