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matplotlib.axis.XAxis.set_alpha
XAxis.set_alpha(self, alpha)- 
    
Set the alpha value used for blending - not supported on all backends.
Parameters: - 
           
alphafloat or None 
 - 
           
 
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 https://matplotlib.org/3.2.2/api/_as_gen/matplotlib.axis.XAxis.set_alpha.html