title: Working with excel in python- method returns none
body: <p>I want to create a class to ease my work when creating Excel sheets and extracting data from it. When I run the code without method it works fine and prints the value that i need.</p>
  
  <pre><code>import win32com.client
  
  t= win32com.client.Dispatch("Excel.Application")
  t.Visible = True
  t.Workbooks.Open("C:\\Users\shtu5t\Desktop\Feb-Mar WT     Campaign.xlsx")
  t.Sheets('Working Area').Select()
  
  print(t.ActiveSheet.Cells(87,9).Value)
  </code></pre>
  
  <p>But when I want to create a class it works fine until I want extract some data from it. It opens the file that I need and selects the sheet but doesn't get the data from a cell and returns none.</p>
  
  <pre><code>import win32com.client
  
  class Excel:
      def __init__(self):
          self.Eserver=win32com.client.Dispatch("Excel.Application")
          self.Eserver.Visible=True
      def open(self,path):
          self.open=self.Eserver.Workbooks.Open(path)
      def select_sheet(self,name):
          self.select_sheet=self.Eserver.Sheets   (name).Select()
      def select_data(self,row,column):
          self.select_data=self.Eserver.ActiveSheet.Cells(row,column).Value
  
  B=Excel()
  B.open("C:\\Users\shtu5t\Desktop\Feb-Mar WT Campaign.xlsx")
  B.select_sheet('Working Area')
  print(B.select_data(87,1))
  </code></pre>
  
  <p>Please, could you tell me what I am doing wrong?</p>
  
  <p>Thank you for your attention!</p>