创建包含字符位置及其相应计数的字典

def create_character_dictionary(string):
    char_dict = {}
    
    for i, char in enumerate(string):
        if char in char_dict:
            char_dict[char]['count'] += 1
            char_dict[char]['positions'].append(i)
        else:
            char_dict[char] = {
                'count': 1,
                'positions': [i]
            }
    
    return char_dict

{
    'h': {
        'count': 1,
        'positions': [0]
    },
    'e': {
        'count': 1,
        'positions': [1]
    },
    'l': {
        'count': 2,
        'positions': [2, 3]
    },
    'o': {
        'count': 1,
        'positions': [4]
    }
}