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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def write(self, s):
 """Write string s to the stream. """

        if self.comptype == "gz":
            self.crc = self.zlib.crc32(s, self.crc)
        self.pos += len(s)
        if self.comptype != "tar":
            s = self.cmp.compress(s)
        self.__write(s)