>>> """
===========================
Rotating custom tick labels
===========================

Demo of custom tick-labels with user-defined rotation.
"""
... import matplotlib.pyplot as plt
... 
... 
... x = [1, 2, 3, 4]
... y = [1, 4, 9, 6]
... labels = ['Frogs', 'Hogs', 'Bogs', 'Slogs']
... 
... plt.plot(x, y)
... # You can specify a rotation for the tick labels in degrees or with keywords.
... plt.xticks(x, labels, rotation='vertical')
... # Pad margins so that markers don't get clipped by the axes
... plt.margins(0.2)
... # Tweak spacing to prevent clipping of tick-labels
... plt.subplots_adjust(bottom=0.15)
... plt.show()
...