TypeError: unsupported operand type(s) for -: 'module' and 'int'

I am trying to print the shape of labels I am getting this error:

print("shape of waves array: ",np.array(all_wave).shape)print("shape of labels array: ",np.array(all_label).shape)#Inspecting random sampletime = np.linspace(0, len(signal - 1) / fs,len(signal - 1))plt.plot(time,np.array(all_wave)[2000])print(np.array(all_label)[2000])ipd.Audio(np.array(all_wave)[2000], rate =sr)

Here is my error

TypeError                                 Traceback (most recent call last)<ipython-input-38-7c43303397f6> in <cell line: 5>()      3       4 #Inspecting random sample----> 5 time = np.linspace(0, len(signal - 1) / fs, len(signal - 1))      6 plt.plot(time,np.array(all_wave)[2000])      7 print(np.array(all_label)[2000])TypeError: unsupported operand type(s) for -: 'module' and 'int'