title: Python divide list into percentages
body: <p>I have a function that applies random colors to each set of elements defined by a percentage. In this case I have a list of 154 elements to start with, but somehow in the end  I get only 152 processed elements. Not sure why, because I am giving it 100% in total when I call the function at the end.</p>
  <pre><code>import maya.cmds as cmds
  import random
  
  def selector(percents):
      RandomSelection = []
      mySel = cmds.ls(sl=1) # a list of elements with a total of 154
      random.shuffle(mySel)
      
      start = 0
      for cur in percents:
          end = start + cur * len(mySel) // 100
          RandomSelection.append(mySel[start:end])
          start = end
      
      print(len(mySel)) # 154
      print ( sum( [ len(listElem) for listElem in RandomSelection]) ) # 152 # why not 154?
      
      for mesh in RandomSelection:
          r = [random.random() for i in range(3)]
          cmds.polyColorPerVertex(mesh,rgb=(r[0], r[1], r[2]), cdo=1 )
      
  
  selector([70, 10, 15, 5])
  #154
  #152
  </code></pre>
  <p>Thank you.</p>