Dirty and ugly hack to duplicate stdout stream to a file. This thing sort of acts like unix's tee program. Be careful as this only overwrites several file functions

tee.py

''' 
    Dirty and ugly hack to duplicate stdout stream to a file
    Be careful as this only overwrites several file functions
    This thing sort of acts like unix's tee program


    Ang Way Chuang <wcang@sfc.wide.ad.jp>
    Feel free to use, modify and distribute. No warranty and no restriction
'''
import sys

class Tee:
    def __init__(self, file_name):
        self.log_file = open(file_name, "wt", 0)
        self.console = sys.stdout
        sys.stdout = self

    def write(self, msg):
        self.log_file.write(msg)
        self.console.write(msg)

    def writelines(self, msg):
        self.log_file.writelines(msg)
        self.console.writelines(msg)

    def flush(self):
        self.log_file.flush()
        self.console.flush()

    def close(self):
        self.console.close()
        self.log_file.close()

if __name__ == '__main__':
    Tee("sample.log")
    print "hello world"
    print "this is me"