Change matplotlib y-axis limits to required power format

Question

I got following plot:

Presently I have 1e-1 as common base for all y-ticks. I want to change it to 1e-2. My present code:

plt.plot(xact,[i-j for i,j in zip(yact,iv_i)],'o') # type(xact) type(iv_i)
plt.ticklabel_format(style='sci', axis='y', scilimits=(0,0))
plt.show()

How to achieve this.