if __name__ == "__main__":
    p100 = 33.0   # points for 100%

    # grades:
    gradestable = [ [ 0.9, 1.0 ], [ 0.84, 1.3 ], [ 0.80, 1.7 ], [ 0.76, 2.0 ], [ 0.72, 2.3 ],
                    [ 0.68, 2.7 ], [ 0.64, 3.0 ], [ 0.60, 3.3 ], [ 0.56, 3.7 ], [ 0.50, 4.0 ] ]

    df = open('notentabelle.dat', 'w')
    df.write('# Notentabelle\n')
    print('# Notentabelle')
    df.write('\n')
    df.write('#Key\n')
    s = '# Note\tProzent\tPunkte'
    df.write(s+'\n')
    print(s)
    for f,g in gradestable :
        s = '  \t%3.1f\t%5.0f\t%5.0f' % (g, 100.0*f, p100*f)
        df.write(s+'\n')
        print(s)
    df.close()