如何根据字典的长度对数据帧进行子集？

def split_data_frame(data_frame, subset_size):
    dict_length = len(data_frame)
    num_subsets = dict_length // subset_size
    subsets = []

    for i in range(num_subsets):
        subset = dict(list(data_frame.items())[i*subset_size : (i+1)*subset_size])
        subsets.append(subset)

    # 处理最后一个子集
    if dict_length % subset_size != 0:
        subset = dict(list(data_frame.items())[num_subsets*subset_size : ])
        subsets.append(subset)

    return subsets

# 示例用法
data_frame = {"key1": "value1", "key2": "value2", "key3": "value3", "key4": "value4", "key5": "value5"}
subset_size = 2
subsets = split_data_frame(data_frame, subset_size)

for subset in subsets:
    print(subset)