Python: How to 'anchor' text to be always visible and set_text method Matplotlib

I have this code: ``` from pylab import * from mpl_toolkits.axes_grid.anchored_artists import AnchoredText import numpy as np import matplotlib.pylab as plt fig = plt.figure() ax = fig.add_subplot(111) ann = AnchoredText('If you zoom in or out, i stay here\nbut can you update this text?', prop=dict(size=8), frameon=True, loc=2, ) ann.patch.set_boxstyle("round,pad=0.,rounding_size=0.2") ax.add_artist(ann) delta = 0.025 x = np.arange(-3.0, 3.0, delta) y = np.arange(-2.0, 2.0, delta) X, Y = np.meshgrid(x, y) Z1 = bivariate_normal(X, Y, 1.0, 1.0, 0.0, 0.0) Z2 = bivariate_normal(X, Y, 1.5, 0.5, 1, 1) Z = (Z1 - Z2) * 10 plt.contourf(X, Y, Z) plt.show() ``` Is there a way to anchor text to be always visible but to also be able to use a `set_text` method like in text objects to update the containing text? Here i used AnchoredText which is anchored perfectly but i cannot find a method to change the text it contains. In AnchoredText Matplotlib documentation i cannot find such a method available. If it cannot be done with AnchoredText can it be done with a simple text object? EDIT I accepted the solution from David Zwicker and here is a working example for anyone in need of it: ``` from pylab import * from mpl_toolkits.axes_grid.anchored_artists import AnchoredText import numpy as np import matplotlib.pylab as plt import random fig = plt.figure() ax = fig.add_subplot(111) ann = AnchoredText('If you zoom in or out, i stay here\nbut can you update this text?$4.1f$ km s$^{-1}$', prop=dict(size=15), frameon=True, loc=2, ) ann.patch.set_boxstyle("round,pad=0.,rounding_size=0.2") ax.add_artist(ann) delta = 0.025 x = np.arange(-3.0, 3.0, delta) y = np.arange(-2.0, 2.0, delta) X, Y = np.meshgrid(x, y) Z1 = bivariate_normal(X, Y, 1.0, 1.0, 0.0, 0.0) Z2 = bivariate_normal(X, Y, 1.5, 0.5, 1, 1) Z = (Z1 - Z2) * 10 plt.contourf(X, Y, Z) a = ["hhhhh", "qqqqq", "aaaaaaa","ttttt","yyyyy","oooooooo"] def setanntext(self): ann.txt.set_text(random.choice(a)) plt.draw() buttonax = plt.axes([0.7, 0.05, 0.1, 0.1]) button = Button(buttonax, 'set text',color='0.85', hovercolor='0.95') button.on_clicked(setanntext) plt.show() ```