[reportlab-users] Crash when creating vertical spans on split tables

[Aaron Barlow]

I had that same problem. I fixed it by adjusting the source code in tables.py from:

t = sum([V[x]+M.get(x,0) for x in xrange(x0,x1)]) on line 205 

to 

for x in xrange(x0, x1):
                if V[x] is None:
                        continue
                t += V[x]+M.get(x,0)

The error is because spanning in PDF tables creates a "super-cell" and a vertical split of a table cell isn't defined.  I'm sure someone will correct me if I'm wrong about that. However, for my needs, changing the source code above removed the error.  

--
Aaron


On Nov 3, 2011, at 6:24 PM, Casey Banner wrote:


> Hi,

> 

> I have a crash that I can reproduce by adding a vertical SPAN to my TableStyle which ends up either crossing over a split border, or begins at the first row of any split other than the first.

> 

> Example: Table is split at row 5, and the SPAN is from 3 to 7.

> Example: Table is split at row 5, and the SPAN is from 5 to 7.

> 

> I have made sure that the first cell in my SPAN is not an empty string.

> 

> The trace:

> 

>   File "render.py", line 179, in <module>

>     doc.build([t])

>   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/reportlab-2.5-py2.7-macosx-10.6-x86_64.egg/reportlab/platypus/doctemplate.py", line 1117, in build

>     BaseDocTemplate.build(self,flowables, canvasmaker=canvasmaker)

>   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/reportlab-2.5-py2.7-macosx-10.6-x86_64.egg/reportlab/platypus/doctemplate.py", line 880, in build

>     self.handle_flowable(flowables)

>   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/reportlab-2.5-py2.7-macosx-10.6-x86_64.egg/reportlab/platypus/doctemplate.py", line 763, in handle_flowable

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

>   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/reportlab-2.5-py2.7-macosx-10.6-x86_64.egg/reportlab/platypus/frames.py", line 159, in _add

>     w, h = flowable.wrap(aW, h)

>   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/reportlab-2.5-py2.7-macosx-10.6-x86_64.egg/reportlab/platypus/tables.py", line 1113, in wrap

>     self._calc(availWidth, availHeight)

>   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/reportlab-2.5-py2.7-macosx-10.6-x86_64.egg/reportlab/platypus/tables.py", line 587, in _calc

>     self._calc_height(availHeight,availWidth,W=W)

>   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/reportlab-2.5-py2.7-macosx-10.6-x86_64.egg/reportlab/platypus/tables.py", line 553, in _calc_height

>     spanFixDim(H0,H,spanCons,lim=hmax)

>   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/reportlab-2.5-py2.7-macosx-10.6-x86_64.egg/reportlab/platypus/tables.py", line 205, in spanFixDim

>     t = sum([V[x]+M.get(x,0) for x in xrange(x0,x1)])

> TypeError: unsupported operand type(s) for +: 'NoneType' and 'int'

> 

> Any ideas on what would cause this?

> 

> Thanks,

> Casey

> 

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