input: Write a function to generate a Python dictionary that contains the count of the characters in a given string. 
  
  def count_chars(string):
      count_dict = {}
  
      for char in string:
          if char in count_dict:
              count_dict[char] += 1
          else:
              count_dict[char] = 1
  
      return count_dict
  
  assert count_chars("Hello World") == {'H': 1, 'e': 1, 'l': 3, 'o': 2, ' ': 1, 'W': 1, 'r': 1, 'd': 1}
  assert count_chars("aabbbc") == {'a': 2, 'b': 3, 'c': 1}
  assert count_chars("") == {}
  assert count_chars("123321") == {'1': 2, '2': 2, '3': 2}
  assert count_chars("!!@") == {'!': 2, '@': 1}
output: def count_chars(string):
      count_dict = {}
  
      for char in string:
          if char in count_dict:
              count_dict[char] += 1
          else:
              count_dict[char] = 1
  
      return count_dict