title: How can I stop pyplot lines on another line?
body: <p><a href="https://i.stack.imgur.com/BuL56.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/BuL56.png" alt="Plot of lines not crossing over the AB line" /></a></p>
  <p>Hello! Does anyone know to achieve something similar to what the graph shows, using matpltolib? I need to draw some lines, such as CC' and DD', that do not cross over a given line AB. Is there any way to achieve this?</p>