How to redirect stdout to both file and console with scripting?

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You can use shell redirection while executing the Python file:

python foo_bar.py > file

This will write all results being printed on stdout from the Python source to file to the logfile.

Or if you want logging from within the script:

import sys

class Logger(object):
    def __init__(self):
        self.terminal = sys.stdout
        self.log = open("logfile.log", "a")
   
    def write(self, message):
        self.terminal.write(message)
        self.log.write(message)  

    def flush(self):
        # this flush method is needed for python 3 compatibility.
        # this handles the flush command by doing nothing.
        # you might want to specify some extra behavior here.
        pass    

sys.stdout = Logger()

Now you can use:

print "Hello"

This will write “Hello” to both stdout and the logfile.

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