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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 echo_heading(text, marker='=', marker_color='blue'):
 """Print a text formatted to look like a heading. The output looks like: ===> text with marker='=' right now. :param str text: the text to echo :param str marker: the marker to mark the heading :param str marker_color: one of ('black' | 'red' | 'green' | 'yellow' | 'blue' | 'magenta' | 'cyan' | 'white') """

    click.secho(marker * 3 + '>', fg=marker_color, nl=False)
    click.echo(' ' + text)