matplotlib.axes.Axes.get_xlim
- 
Axes.get_xlim() - 
Get the x-axis range
Returns: - 
xlimits : tuple - 
Returns the current x-axis limits as the tuple (
left,right). 
Notes
The x-axis may be inverted, in which case the
leftvalue will be greater than therightvalue. - 
 
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    https://matplotlib.org/3.0.0/api/_as_gen/matplotlib.axes.Axes.get_xlim.html