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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 rename(self, name):
 """Send to the remote shell, its new name to be shell expanded"""

        if name:
            # defug callback add?
            rename1, rename2 = callbacks.add(
                b'rename', self.change_name, False)
            self.dispatch_command(b'/bin/echo "' + rename1 + b'""' + rename2 +
                                  b'"' + name + b'\n')
        else:
            self.change_name(self.hostname.encode())