Need your help again! I have a file that contains several _begin and _end classes with _begin is that start of the block and _end being the end of block. Sometimes we miss either _begin or _end. I am trying to write a script that find every _begin should contain _end. If for reasons _end is missing, it should error out. Likewise, if you have _end, you should expect to have _begin in the previous lines. Can you help me how to check this condition in my script?
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