plt set ax label code example

Example 1: change name of axis matplotlib

plt.xlabel('X axis')
plt.ylabel('Y axis')

Example 2: matplotlib axes labels

fig = plt.figure()
ax = fig.add_subplot(...)

ax.set_title('Title Here')

ax.set_xlabel('x label here')
ax.set_ylabel('y label here')
ax.set_zlabel('z label here')