input: Write a function that takes in a text string and returns a dictionary of words and the number of times each word appears in the text string.
  
  def words_count(text):
   words_dict = {}
   for word in text.split(' '):
   if word in words_dict:
   words_dict[word] += 1
   else:
   words_dict[word] = 1
   return words_dict
  
  assert words_count("A quick brown fox jumps over the lazy dog")=={'A': 1, 'quick': 1, 'brown': 1, 'fox': 1, 'jumps': 1, 'over': 1, 'the': 1, 'lazy': 1, 'dog': 1}
  assert words_count("This is a test. This is only a test.")=={'This': 2, 'is': 2, 'a': 2, 'test.': 1, 'only': 1, 'test': 1}
  assert words_count("")=={}
  assert words_count("Repeat Repeat Repeat")=={'Repeat': 3}
output: def words_count(text):
   words_dict = {}
   for word in text.split():
    if word in words_dict:
     words_dict[word] += 1
    else:
     words_dict[word] = 1
   return words_dict