获取列表中所有可能的值组合-- Python

def get_combinations(nums):
    if len(nums) == 0:
        return [[]]
    
    result = []
    for i in range(len(nums)):
        current_num = nums[i]
        remaining_nums = nums[:i] + nums[i+1:]
        combinations = get_combinations(remaining_nums)
        
        for combination in combinations:
            result.append([current_num] + combination)
    
    return result