title: How do you iterate over float excel columns in python?
body: <p>Say I have an imported excel sheet that looks like this:</p>
  <pre><code>    A         B        C          D
  4.296178, 0.434362, 0.033033, 2.758968
  0.296178, 0.434362, 0.033033, 0.758968
  3.396178, 0.434362, 0.033033, 1.758968
  </code></pre>
  <p>And I want to iterate through it in a way that returns the sum of each column, how would I do this?</p>
  <p>I have tried this:</p>
  <pre><code>import openpyxl
  
  
      templist = []
      Col_one_total = []
      Col_two_total = []
      Col_three_total = []
      
      for row in sheet.rows:
          Col_one_total += row[0].value
          Col_two_total += row[1].value
          Col_three_total += row[2].value
          templist.append(Col_one_total)
          templist.append(Col_two_total)
          templist.append(Col_three_total)
          return max(templist)
  </code></pre>
  <p>but I keep getting an error saying <code>TypeError: 'float' object is not iterable</code>.
  Does anyone know how to resolve this?</p>