title: How to extract the following using pandas or regex
body: <p>The following is a column in pandas data frame. I want to get all the unique values like Style, Color, Flavor, Size, Scent Name...</p>
  
  <pre><code>Style: Lovenest - Newborn Pillow|||Color: Gray #Style and Color from this row
  Style: Baby Calendula Face Cream #Style from this row
  Color: Brown #Color from this row
  Color: Matrix|||Item Package Quantity: 1 #Color &amp; Item Package Quantity from this row
  Color: Matrix|||Item Package Quantity: 1 #Color &amp; Item Package Quantity from this row
  Flavor: Baby Colic Babies Magic Tea|||Size: 1 Pack #Flavor &amp; Size from this row
  Scent Name: Sensitive|||Size: 100 Count (Pack of 6) #Scent Name &amp; Size from this row
  Scent Name: Sensitive|||Size: 100 Count (Pack of 6) #Scent Name &amp; Size from this row
  
  In [3]: df['variations'].head()
  Out[3]: 
  0    Style: Lovenest - Newborn Pillow|||Color: Gray
  1    Style: Lovenest - Newborn Pillow|||Color: Gray
  2    Style: Lovenest - Newborn Pillow|||Color: Gray
  3    Style: Lovenest - Newborn Pillow|||Color: Gray
  4    Flavor: Baby Colic Babies Magic Tea|||Size: 1 Pack
  Name: variations, dtype: object
  </code></pre>
  
  <p>Expected output  ['Style','Color','Flavor','Size']</p>