On Wednesday, October 15, 2014 10:43:23 AM UTC-7, Dave S wrote: > > > > On Tuesday, October 14, 2014 3:23:15 PM UTC-7, Vin wrote: >> >> Hi all, >> >> I need to stream a text log file via web2py. The file is generated by a >> python script that runs outside web2py, but is saved to the "uploads" >> folder. >> >> This is what I have in a controller called 2.py: >> >> def index(): >>> import os >>> path=os.path.join(request.folder,'uploads','log.log') >>> return response.stream(open(path,'rb'),chunk_size=4096) >> >> >> When I navigate to *...app/2 *the contents of log.log are displayed on >> the browser, yes. But my problem is that I only need to see the tail of >> the file (it can get very large), like you would from the command line. >> >> *tail -f log.log* >> >> Any ideas? >> > > Python's seek() has an option to specify "relative to the end of file" for > a file open in read mode. > Old docs: <http://docs.python.org/2.4/lib/bltin-file-objects.html> > Current docs: <http://docs.python.org/2/library/stdtypes.html#file-objects > > > > There is also os.stat() > <http://docs.python.org/2/library/os.html#files-and-directories> > >
See also these posts in other forums: <http://code.activestate.com/recipes/157035-tail-f-in-python/> <http://stackoverflow.com/questions/6591931/getting-file-size-in-python> and a broader answer: <http://blog.gocept.com/2013/07/15/reliable-file-updates-with-python/> -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
