[reportlab-users] Layout problem while using KeepTogether flowable

Matt Folwell mjf at pearson.co.uk
Fri Aug 20 05:49:09 EDT 2010

On 20/08/2010 07:29, Javier Amor García wrote:

> Hello,

> I am using reportlab and is working fine except when I use the

> KepeTogether to group the hoistory's elements of my report sections.

> Then I usually, but not always, I get a Layout error.

> It is worth to note that when I am not using KeepTogether the code works

> flawlessly, here is the change I made to use KeepTogether (section_rows

> is a list when the story elements of the section):


> # return section_rows

> return [KeepTogether(section_rows)]



> This is the trace and the layout error I get:


> -------------

> reportlab.platypus.doctemplate.LayoutError: Flowable <Table at 0x0A20184C 3

> rows x 1 cols> with cell(0,0) containing

> "<Table at 0x0A213A0C 1 rows x 1 cols> with cell(0,0)

> containing\n'<KeepTogether at 0xa213b0c> containing :<Paragraph at

> 0xa213'"(745.26 x 50331681) too large on page 4 in frame

> 'normal'(439.275590551 x 685.88976378*) of template 'Later'

> ----------------------

You're putting your KeepTogether in a table, which doesn't work.
(Because the table needs not know how long each of its rows is, and the
KeepTogther lies about that to force a split.)

But there's no need for a KeepTogether there anyway, as Reportlab never
splits inside a table row.


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