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Version 2.1.1.post1080+g0db0992
matplotlib
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matplotlib.pyplot.ylabel

matplotlib.pyplot.ylabel(s, *args, **kwargs)

Set the y axis label of the current axis.

Defaults override is:

override = {
   'fontsize'            : 'small',
   'verticalalignment'   : 'center',
   'horizontalalignment' : 'right',
   'rotation'='vertical' : }

See also

text()
For information on how override and the optional args work.