'O' python Objects 'S','a' zero-terminated bytes(not recommended) 'U' unicode string 'v' raw data'''people_array= np.zeros((4,),dtype=person_data_def)#上述是创造一个行数为4的数组,单个数组的样式是依据person_data_defpeople_array[0] = ('steven', 175, 70, 42) people_array[2] =...
plt.title('Distribution of Dark Energy and Dark Matter in the Universe') x = [74.0,22.0,3.6,0.4] labels = ['Dark Energy', 'Dark Matter', 'Intergalatic gas', 'Stars,etc'] plt.pie(x, labels=labels, autopct='%1.1f%%'); plt.show() Figure 8: Pie chart with MatPlotLib Figure 9:...