The problem is likely due to the fact that myFile.data is not a string for large files, so you can't split it. It is actually a PData object which segments the data into chunks for better memory handling.

If you use the str() function on the file though, that should give you what you want:

theData = str(myFile)

That was it!!!! Oh God. All that pulling of hair... banging of head... gnashing of teeth... Thank you. Thank you. Thank you. I never suspected this because it worked just fine for the smaller files. But then it would have -- only for the smaller files -- now that one knows that a PData object is returned from .data, rather than the actual contents of the file. I didn't even think to look at the source. Something should be added to the Zope Book about this (the Appendix on the File object is very scanty). Yikes. All that time... In any case, Cacey, please accept my sincere thanks. Best wishes, Ron

hth, -Casey

--- complaw@hal-pc.org wrote:

...

I have a python script that works just fine in Zope for SMALL input files (between 1-100 cases). However, Zope returns an error when the input file gets large (100+ cases, depending on the situation). In the error message, Zope points to a line where I take the input file and split it to create a list of lines. Note, the same script (with split) works just fine when I run the script in regular python (i.e., outside of Zope).

To get around this, I would normally just read the file one line at a time, however, we don't have access to the sys module in Zope. I have loaded the input file into a File Object in Zope, and can access it via...

theData = context.myFile.data

The problem that I have is that when you do a split on theData, Zope returns the split error (IF myFile is large enough).

The question I have is, how can I read small chunks of content from the File Object? This is akin to reading a text file one line at a time.

Any hints?

Ron

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