How to duplicate sys.stdout to a log file?

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I had this same issue before and found this snippet very useful:

class Tee(object):
    def __init__(self, name, mode):
        self.file = open(name, mode)
        self.stdout = sys.stdout
        sys.stdout = self
    def __del__(self):
        sys.stdout = self.stdout
        self.file.close()
    def write(self, data):
        self.file.write(data)
        self.stdout.write(data)
    def flush(self):
        self.file.flush()

from: http://mail.python.org/pipermail/python-list/2007-May/438106.html

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