On 19/11/12 14:29:13, Yasir Saleem wrote: > Hi all, > > I am generating graphs using "cairo plot" in web2py project. > Here I am using BytesIO() stream for generating graphs. > Everything runs fine when I run on localhost but when I deploy > it on apache server and then run from different machines OR > from different browsers in same machine then the server > becomes halt and in apache error log, I found this error > message: > > Premature end of script headers: wsgihandler.py, > > Furthermore, it occurs only when I use BytesIO() stream for > generating graphs. In all other cases, it run smoothly. > > Please guide me that how I should resolve this issue.
One technique is to put at the very top of the script, even above the import statements: print "Content-Type: text/plain\n\n" This will cause all text output by your script to be displayed in your browser as plain text [1]. If you inspect it, you'll probably find some kind of warning displayed above the HTML headers. You'll need to find a way to not receive that warning. It's usually best if you can actually solve the issue Python is warning about. it that's not possible, suppressing the warning may be your only alternative. If you can't figure out what the message means, and Google doesn't know either, you can post it in this forum and ask for further guidance. [1] Except if you use Internet Explorer, which will ask you whether you want to save the document. You can either do that and view the content with another application, or use another browser, or change the content-type to text/html. If you do the latter, IE will notice that the content is really plain text, and that it is actually quite capable of displaying that. Hope this helps, -- HansM -- http://mail.python.org/mailman/listinfo/python-list