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. The function should be named `words_count` and take one parameter `text`. If the input string is empty, the function should return an empty dictionary.
  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("")=={}
output: def words_count(text):
      if not text:
          return {}
      words = text.split()
      word_count = {}
      for word in words:
          if word in word_count:
              word_count[word] += 1
          else:
              word_count[word] = 1
      return word_count