title: Python 'NoneType' object is not callable (beginner)
body: <p>I'm writing a script using Beautiful Soup that scrapes the start and end dates of the every Wimbledon tennis tournament from 1999-2003 from their respective Wikipedia pages. </p>
  
  <p>I want to get the date range as a list of selectable objects, and I have written a script that achieves this:</p>
  
  <pre><code>from bs4 import BeautifulSoup
  import requests
  import re 
  import os 
  
  year = 1999 
  url = "https://en.wikipedia.org/wiki/{tourneyYear}_Wimbledon_Championships"
  range = [1, 2, 3, 4, 5,]
  
  for number in range:
  
      response = requests.get(url.format(tourneyYear=year))
      text = response.text
      soup = BeautifulSoup(text, "html.parser")
  
      overviewTable = soup.find('table', attrs ={'class':"infobox vevent"})
  
      date = overviewTable.find('th', attrs={"scope":"row"}).parent
      specialResult = date.find('td')
      for sentence in specialResult:
      words = sentence.split()
  
      print(words)
  
      year += 1
  </code></pre>
  
  <p>The loop iterates through the webpages ('year' increases by 1 each time and slots into the URL structure that I've defined - this part works perfectly, by the way) and it is supposed to print the list at the end. </p>
  
  <p>For the first two iterations of the loop (for the 1999 and 2000 Wimbledon pages), the list prints just fine. But on the third iteration it returns the following error: </p>
  
  <pre><code>Traceback (most recent call last):
    File
   "XYZ", line 21, in &lt;module&gt;
      words = sentence.split()
  TypeError: 'NoneType' object is not callable
  </code></pre>
  
  <p>The HTML structure of the relevant part of each webpage is identical (as far as I can tell), and the loop only fails for the 2001 iteration (I know this because if I set the loop to iterate for any five-year range that doesn't include 2001, it works just fine).</p>
  
  <p>Is there an error in my code, or does is that particular webpage different in some way that I haven't noticed? I've been racking my brains for days on this one, to no avail!</p>