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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 format_comment(comment_data):
 """Formats the data returned by the linters. Given a dictionary with the fields: line, column, severity, message_id, message, will generate a message like: 'line {line}, col {column}: {severity}: [{message_id}]: {message}' Any of the fields may nbe absent. Args: comment_data: dictionary with the linter data. Returns: a string with the formatted message. """

    format_pieces = []
    # Line and column information
    if 'line' in comment_data:
        format_pieces.append('line {line}')
    if 'column' in comment_data:
        if format_pieces:
            format_pieces.append(', ')
        format_pieces.append('col {column}')
    if format_pieces:
        format_pieces.append(': ')

    # Severity and Id information
    if 'severity' in comment_data:
        format_pieces.append('{severity}: ')

    if 'message_id' in comment_data:
        format_pieces.append('[{message_id}]: ')

    # The message
    if 'message' in comment_data:
        format_pieces.append('{message}')

    return ''.join(format_pieces).format(**comment_data)