gistfile1.py

import matplotlib.pyplot as plt
from matplotlib.transforms import Affine2D
import mpl_toolkits.axisartist.floating_axes as floating_axes

fig = plt.figure()

plot_extents = 0, 10, 0, 10
transform = Affine2D().rotate_deg(45)
helper = floating_axes.GridHelperCurveLinear(transform, plot_extents)
ax = floating_axes.FloatingSubplot(fig, 111, grid_helper=helper)

fig.add_subplot(ax)

# Hide the ticks and background
ax.patch.set(visible=False)
for axis in ax.axis.values():
    # If you'd like to hide the borders, use "axis.line.set(visible=False)"
    axis.major_ticks.set(visible=False)

plt.show()