import matplotlib.pyplot as plt

x_values = list(range(1,1001))

y_values = [x**2 for x in x_values]

plt.scatter(x_values, y_values,c=y_values,cmap=plt.cm.Blues, edgecolor='none', s=40)

#设置图表标题并给坐标轴加上标签

plt.title("Squares numbers", fontsize=24)

plt.xlabel("Value", fontsize=14)

plt.ylabel("Square of value", fontsize=14)

#设置刻度标记的大小

plt.tick_params(axis='both', which='major',labelsize=14)

#设置每个坐标轴的取值范围

plt.axis([0,1100,0,1100000])

plt.show()

plt.savefig('squares_plot.png', bbox_inches='tight')