[reportlab-users] Setting Paragraphs as individual elements in a data table

[Funke, Matt]

> No, this is almost certainly caused by the way you created the table data.  I suspect you've fallen into one of the classic Python blunders. 

> I'm guessing you did something like this:

> 

>     image = [[Image(...)],'']

>     headerTableData = [image,image,image]

>    # or

>     headerTableData = [image]*3

> 

> That would result in the behavior you see.  This does not create three different lists.  That creates three references to the SAME list.  So:

>     headerTableData[0][1] = 'd'

> changes the one list that all three entries refer to.

> 

> If that's what happened, you need to do something to do a deeper copy, like:

>     headerTableData = [image[:], image[:]. image[:]]


That sounds about right.  I made the initial list with these statement:

cols = 2
rows = 3
headerTableData = [[''] * cols] * rows

... and then set about trying to set each element individually.  I'll try to create a "deep copy" somehow.  I wanted rows and columns to be settable as parameters sent to a procedure.

Thanks again for your help.

Matt Funke
Programmer/Analyst
Vishay Precision Group, Inc.
951 Wendell Blvd
Wendell, NC 27591 USA
Office: 919-374-5553
Mobile: 919-628-9261
Fax: 919-374-5248