ZeroDivisionError: float division by zero

[shen139]

Hi,
I get this error while trying to parse an HTML containing the following piece of code.
I'm using the latest versions of all packages needed:

• html5lib-0.90
• pyPdf-1.13
• reportlab-2.5
• xhtml2pdf-0.0.3

and Python 2.7 (2.7 (r27:82525, Jul 4 2010, 09:01:59) [MSC v.1500 32 bit (Intel)])

Python Code:
-[
import cStringIO as StringIO
from xhtml2pdf import pisa
....

html = '''
<TABLE BORDER="0" CELLPADDING="2" CELLSPACING="2">
<TR>
<TD></TD>
</TR>
</TABLE>
'''
dest = file('test.pdf', "wb")
pdf = pisa.CreatePDF(
StringIO.StringIO(html),
dest,
log_warn = 1,
log_err = 1
)
]-

Note: If I put something inside the TD (example: ".... <TD>... some stuff..... </TD>........") or I change the value of the attr cellpadding, it works!!!

Traceback:
-[
Traceback (most recent call last):
File "C:\tmp\test.py", line 95, in
log_err = 1
File "C:\Python27\lib\site-packages\xhtml2pdf\document.py", line 131, in pisaDocument
doc.build(context.story)
File "C:\Python27\lib\site-packages\reportlab\platypus\doctemplate.py", line 880, in build
self.handle_flowable(flowables)
File "C:\Python27\lib\site-packages\reportlab\platypus\doctemplate.py", line 763, in handle_flowable
if frame.add(f, canv, trySplit=self.allowSplitting):
File "C:\Python27\lib\site-packages\reportlab\platypus\frames.py", line 174, in _add
flowable.drawOn(canv, self._x + self._leftExtraIndent, y, _sW=aW-w)
File "C:\Python27\lib\site-packages\reportlab\platypus\flowables.py", line 108, in drawOn
self._drawOn(canvas)
File "C:\Python27\lib\site-packages\reportlab\platypus\flowables.py", line 89, in _drawOn
self.draw()#this is the bit you overload
File "C:\Python27\lib\site-packages\reportlab\platypus\tables.py", line 1302, in draw
self._drawCell(cellval, cellstyle, (colpos, rowpos), (colwidth, rowheight))
File "C:\Python27\lib\site-packages\reportlab\platypus\tables.py", line 1393, in _drawCell
w, h = self._listCellGeom(cellval,colwidth,cellstyle,W=W, H=H,aH=rowheight)
File "C:\Python27\lib\site-packages\xhtml2pdf\xhtml2pdf_reportlab.py", line 710, in _listCellGeom
return Table._listCellGeom(self, V, w, s, W=W, H=H, aH=aH)
File "C:\Python27\lib\site-packages\reportlab\platypus\tables.py", line 377, in _listCellGeom
vw, vh = v.wrapOn(canv, aW, aH)
File "C:\Python27\lib\site-packages\reportlab\platypus\flowables.py", line 119, in wrapOn
w, h = self.wrap(aW,aH)
File "C:\Python27\lib\site-packages\xhtml2pdf\xhtml2pdf_reportlab.py", line 693, in wrap
return KeepInFrame.wrap(self, availWidth, availHeight)
File "C:\Python27\lib\site-packages\reportlab\platypus\flowables.py", line 970, in wrap
W, H = func(s1)
File "C:\Python27\lib\site-packages\reportlab\platypus\flowables.py", line 951, in func
W /= x
ZeroDivisionError: float division by zero
]-

Thanks for your great job,
Shen139

[elena]

Had this same error and after quite a lot of reduction found the cause in the html.

With a lot of crazy stuff in the html (<script>, <style>, @, doctype) it turns out that the bug was set off by one line of css in a style tag.

I can't work out why this exact line of css was broken -- but it was definitely cause of this error:

td {border: 1px solid #aaa; padding: 2px 5px; margin: 0;}


The error was resolved when the 'padding' style was removed:

td {border: 1px solid #aaa; margin: 0;}


Regards!

---

Note that I have the following line further up that did not cause this bug:

h3 {padding: 10px 5px 5px 5px; font-family: Verdana, Arial, Helvetica, sans-serif; margin: 0; color: #333; border-top: 1px solid #666; }


[uoramas]

Hi. I had this problem only when trying to render a table which contained a lot of rows. I confirm that the above solution worked for me. Thanks!

[vanschelven]

I can confirm that the above error happens (in the case of a large table, combined with a "padding: 4px" css).

Removing the line "works", i.e. makes it no longer crash (but costs us dearly in the layout).
A real solution would be even better.

[vanschelven]

It seems to me the division by zero is caused by the variable H being 0 at some point.

Similarly, the value of s1 will be 0 in that case as well, and trigger and error further down even if wrapping the above lines in if statements

s = _qsolve(maxHeight*(1-f),_hmodel(s0,s1,H0,H1))

will trigger

a21 = 1./s1**2 to fail further down

[afriapps]

I had the same issue, paading fixed it. But this is not a fix!

[jodybeggs]

I had the same issue but with empty html tags

Fixed it with a non breaking space in every empty tag.

Sorry I wanted to leave an example but the html disappears need a link to the comment docs.

[mabroor]

any updates on this issue? I have found that the culprit is the top and bottom padding, minimum usable value is 1px

[pztrick]

Another culprit...

<div class="pdf-report" style="width: 100%;"> ... </div>

[cristianocca]

Any news on this? No padding nor width with percentages yet I get this error with a lot of data, and it happens randomly (sometimes fails, sometimes ok)
Is this project at least alive?

[ribalba]

Hello, yes it is alive :) Can you maybe send me the files so I can try to recreate the error. didi@ribalba.de Cheers

[cristianocca]

Looks like it is fixed on 0.0.6, at least for my case, but since there are many possible options causing it I can't tell exactly.

[benjaoming]

Not seeing this issue anymore