def build_csv(data, filename='gyuto_data.csv'):
    """Create basic CSV file from data
    
    "data" should be a dict-type, output lines are of the form "{key},{value}"
    """
    with open(filename, 'w') as fout:
        fout.write('name,value\n')
        for k, v in data.iteritems():
            fout.write('{0},{1}\n'.format(k, v))
