matplotlib pie chart move autotext
for patch, txt in zip(patches, autotexts):
# the angle at which the text is located
ang = (patch.theta2 + patch.theta1) / 2.
# new coordinates of the text, 0.7 is the distance from the center
x = patch.r * 0.7 * np.cos(ang*np.pi/180)
y = patch.r * 0.7 * np.sin(ang*np.pi/180)
# if patch is narrow enough, move text to new coordinates
if (patch.theta2 - patch.theta1) < 10.:
txt.set_position((x, y))