title: Python Pandas Dataframe - consider only first occurrence in column [Combined Decision]
body: <p>So, for these 2 columns, [Decision_A], [Combined_Decision], is there a way that I only take first occurrence of [Combined_Decision] == TRUE while subsequent &quot;TRUE&quot; can be ignored until next &quot;TRUE&quot; appears in [Decision_A] in pandas dataframe?</p>
  <p>Dataframe columns be like</p>
  <p><a href="https://i.stack.imgur.com/siWjp.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/siWjp.png" alt="enter image description here" /></a></p>