input: Write a function to generate a Python dictionary that contains the count of the characters in a given string. If the string is empty, return an empty dictionary.
  
  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("Python") == {'P': 1, 'y': 1, 't': 1, 'h': 1, 'o': 1, 'n': 1}
  assert count_chars("") == {}
  assert count_chars("aabbbcccc") == {'a': 2, 'b': 3, 'c': 4}
  assert count_chars("1234567890") == {'1': 1, '2': 1, '3': 1, '4': 1, '5': 1, '6': 1, '7': 1, '8': 1, '9': 1, '0': 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