创建字符串组合并根据组合计算内容(Python)

def generate_combinations(string, length):
    if length == 0:
        return ['']
    
    combinations = []
    for char in string:
        for combination in generate_combinations(string, length - 1):
            combinations.append(char + combination)
    
    return combinations

def calculate_content(string, indices):
    content = ''
    for index in indices:
        content += string[index]
    
    return content

# 创建字符串组合
string = 'abc'
length = 2
combinations = generate_combinations(string, length)

# 根据组合计算内容
indices = [0, 2]
content = calculate_content(string, indices)

print('字符串组合：', combinations)
print('计算内容：', content)

字符串组合： ['aa', 'ab', 'ac', 'ba', 'bb', 'bc', 'ca', 'cb', 'cc']
计算内容： ac