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Re: Help me to print to screen as well as log

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> I want that print "hello" should appear on screen as well as get saved in a log file.
> How can I accomplish this?
There are many ways to do this, here's one:

class MultiWriter(object):
    def __init__(self, *writers):
        self.writers = writers
        self.isatty = False

    def write(self, data):
        for writer in self.writers:
            writer.write(data)

    def flush(self):
        for writer in self.writers:
            writer.flush()


out = open('/tmp/log.txt', 'a')
import sys
sys.stdout = MultiWriter(sys.stdout, out)
print('hello')

IMO you're better with the logging package, see http://docs.python.org/2/howto/logging.html#configuring-logging for more details.

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Thread

Help me to print to screen as well as log Himanshu Garg <hgarg.india@gmail.com> - 2013-11-22 05:51 -0800
  Re: Help me to print to screen as well as log Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-11-22 14:15 +0000
    Re: Help me to print to screen as well as log Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-11-22 15:38 +0000
  Re: Help me to print to screen as well as log Peter Otten <__peter__@web.de> - 2013-11-22 15:26 +0100
  Re: Help me to print to screen as well as log Himanshu Garg <hgarg.india@gmail.com> - 2013-11-23 05:11 -0800
    Re: Help me to print to screen as well as log Dave Angel <davea@davea.name> - 2013-11-23 18:02 -0500
  Re: Help me to print to screen as well as log Miki Tebeka <miki.tebeka@gmail.com> - 2013-11-23 16:23 -0800
  Re: Help me to print to screen as well as log Himanshu Garg <hgarg.india@gmail.com> - 2013-11-23 23:00 -0800

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