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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 writeline(self, line=b'', sep=b'\n', echo=None):
 """ Write a byte sequences to the channel and terminate it with carriage return and line feed. Args: line(bytes):
 The line to send. sep(bytes):
 The separator to use after each line. echo(bool):
 Whether to echo the written data to stdout. Raises: EOFError: If the channel was closed before all data was sent. """


        self.writelines([line], sep, echo)