matplotlib set yaxis label size

Question

How can I change the size of only the yaxis label? Right now, I change the size of all labels using

pylab.rc(\'font\', family=\'serif\', size=40)

Answer 1

If you are using the 'pylab' for interactive plotting you can set the labelsize at creation time with pylab.ylabel('Example', fontsize=40).

If you use pyplot programmatically you can either set the fontsize on creation with ax.set_ylabel('Example', fontsize=40) or afterwards with ax.yaxis.label.set_size(40).