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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 send(self, content):
 """ Write the content received from the SSH client to the standard input of the forked command. :param str content: string to be sent to the forked command """

        try:
            self.process.stdin.write(content)
        except IOError as e:
            # There was a problem with the child process. It probably
            # died and we can't proceed. The best option here is to
            # raise an exception informing the user that the informed
            # ProxyCommand is not working.
            raise ProxyCommandFailure(" ".join(self.cmd), e.strerror)
        return len(content)