将姓名列表中的列拆分为所有首字母组合

def split_name_list(names):
    initials = ""
    for name in names:
        initials += name[0]
    
    combinations = []
    for i in range(len(initials)):
        for j in range(i+1, len(initials)+1):
            combination = initials[i:j]
            combinations.append(combination)
    
    return combinations

# 示例使用
name_list = ["Alice", "Bob", "Charlie", "David"]
result = split_name_list(name_list)
print(result)

['A', 'Al', 'Ali', 'Alic', 'Alice', 'B', 'Bo', 'Bob', 'C', 'Ch', 'Cha', 'Char', 'Charl', 'Charli', 'Charlie', 'D', 'Da', 'Dav', 'Davi', 'David']