Adjust figure margin

I just discovered how to eliminate all margins from my figures. I didn’t use tight_layout(), instead I used:

import matplotlib.pyplot as plt
fig = plt.figure(figsize=(20,20))
ax = plt.subplot(111,aspect="equal")
plt.subplots_adjust(left=0, bottom=0, right=1, top=1, wspace=0, hspace=0)

Hope this helps.