5(improved) code.py 文件源码

def show_results_prepare(self):
        font = {'family': 'serif',
                'color':  'k',
                'weight': 'normal',
                'size': 13,
        }
        pl.figure(1)
        pl.title('The Trajectory of Cannon Shells', fontdict = font)
        pl.xlabel('x / $km$')
        pl.ylabel('y / $km$')
        pl.xlim(0, 60)
        pl.ylim(0, 20)
        pl.grid(True)
        pl.text(2, 16.5, 'With air drag, the reduced air density \n        and g varying with altitudes', fontdict = font)
        pl.show()