How do I make the ticks go from 0 to 100?

I have a dataset where the values range from 20 to 90, but I want the y
coordinates to go from 0 to 100.
Also, how can I draw a highlight (colored line) across the chart at 30, and
another at 70?

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carlwenrich wrote:

I have a dataset where the values range from 20 to 90, but I want the y
coordinates to go from 0 to 100.
  

import pylab

pylab.ylim(0,100)

Also, how can I draw a highlight (colored line) across the chart at 30, and
another at 70?
  
pylab.axhline(30,color='r')
pylab.axhline(70.color='r')

HTH,

-Jeff

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