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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 draw_header(self, stream, header):
 """Draw header with underline"""

        stream.writeln('=' * (len(header) + 4))
        stream.writeln('| ' + header + ' |')
        stream.writeln('=' * (len(header) + 4))
        stream.writeln()