[ERROR] pdfbuilder.py:130 cannot concatenate 'str' and 'int' objects

[João Patrício]

Hey,

When running 

sphinx-build -bpdf sourcedir outdir

I'm running into this error:  [ERROR] pdfbuilder.py:130 cannot concatenate 'str' and 'int' objects

Here's the traceback.

Traceback (most recent call last):

  File "/my/path/venv/local/lib/python2.7/site-packages/rst2pdf/pdfbuilder.py", line 127, in write

    docwriter.write(doctree, destination)

  File "/my/path/venv/local/lib/python2.7/site-packages/docutils/writers/__init__.py", line 80, in write

    self.translate()

  File "/my/path/venv/local/lib/python2.7/site-packages/rst2pdf/pdfbuilder.py", line 621, in translate

    compressed=self.compressed)

  File "/my/path/venv/local/lib/python2.7/site-packages/rst2pdf/createpdf.py", line 653, in createPdf

    pdfdoc.multiBuild(elements)

  File "/my/path/venv/local/lib/python2.7/site-packages/reportlab/platypus/doctemplate.py", line 972, in multiBuild

    self.build(tempStory, **buildKwds)

  File "/my/path/venv/local/lib/python2.7/site-packages/reportlab/platypus/doctemplate.py", line 892, in build

    self.handle_flowable(flowables)

  File "/my/path/venv/local/lib/python2.7/site-packages/rst2pdf/createpdf.py", line 762, in handle_flowable

    if frame.add(f, canv, trySplit=self.allowSplitting):

  File "/my/path/venv/local/lib/python2.7/site-packages/rst2pdf/flowables.py", line 559, in add

    return Frame.add(self, flowable, canv, trySplit)

  File "/my/path/venv/local/lib/python2.7/site-packages/reportlab/platypus/frames.py", line 174, in _add

    flowable.drawOn(canv, self._x + self._leftExtraIndent, y, _sW=aW-w)

  File "/my/path/venv/local/lib/python2.7/site-packages/rst2pdf/flowables.py", line 248, in drawOn

    self.t.drawOn(canvas, x, y, _sW)

  File "/my/path/venv/local/lib/python2.7/site-packages/reportlab/platypus/flowables.py", line 109, in drawOn

    self._drawOn(canvas)

  File "/my/path/venv/local/lib/python2.7/site-packages/reportlab/platypus/flowables.py", line 90, in _drawOn

    self.draw()#this is the bit you overload

  File "/my/path/venv/local/lib/python2.7/site-packages/reportlab/platypus/tables.py", line 1367, in draw

    self._drawCell(cellval, cellstyle, (colpos, rowpos), (colwidth, rowheight))

  File "/my/path/venv/local/lib/python2.7/site-packages/reportlab/platypus/tables.py", line 1475, in _drawCell

    v.drawOn(self.canv,x,y)

  File "/my/path/venv/local/lib/python2.7/site-packages/rst2pdf/image.py", line 488, in drawOn

    return self.image.drawOn(canv, x, y, _sW)

  File "/my/path/venv/local/lib/python2.7/site-packages/reportlab/platypus/flowables.py", line 109, in drawOn

    self._drawOn(canvas)

  File "/my/path/venv/local/lib/python2.7/site-packages/reportlab/platypus/flowables.py", line 90, in _drawOn

    self.draw()#this is the bit you overload

  File "/my/path/venv/local/lib/python2.7/site-packages/reportlab/platypus/flowables.py", line 486, in draw

    mask=self._mask,

  File "/my/path/venv/local/lib/python2.7/site-packages/reportlab/pdfgen/canvas.py", line 926, in drawImage

    imgObj = pdfdoc.PDFImageXObject(name, image, mask=mask)

  File "/my/path/venv/local/lib/python2.7/site-packages/reportlab/pdfbase/pdfdoc.py", line 2112, in __init__

    self.loadImageFromSRC(source)   #it is already a PIL Image

  File "/my/path/venv/local/lib/python2.7/site-packages/reportlab/pdfbase/pdfdoc.py", line 2209, in loadImageFromSRC

    self._checkTransparency(im)

  File "/my/path/venv/local/lib/python2.7/site-packages/reportlab/pdfbase/pdfdoc.py", line 2181, in _checkTransparency

    tc = im.getTransparent()

  File "/my/path/venv/local/lib/python2.7/site-packages/reportlab/lib/utils.py", line 668, in getTransparent

    return map(ord, palette[transparency:transparency+3])

TypeError: cannot concatenate 'str' and 'int' objects

FAILED

I'm clueless on could be going on. I think my conf.py file is in order.

Don't know if it's relevant, but I'm running it on a virtual environment. Any help would be greatly appreciated.

João

[Michael Gielda]

Hi,

What version of rst2pdf do you use? I remember running into this while using the apt-get version of rst2pdf in Debian (which is a stunning 0.16...). This version of rst2pdf did not support images with transparency, as far as I understand - using an image without transparency made the problem go away. So I uninstalled the apt-get version of rst2pdf, installed it with pip (0.93-dev) and then everything worked. Could you try this route assuming this is the case?

Cheers,

Michael