这段代码常因result结果出不来而无法继续运行，帮我加个条件判断，如果result没有结果的话重新运行这个filename，直到有结果为止。import csv import os import json from IPython import display pic_folder_path = "./期末作业-面部数据/face_images/a1" output_list = [] for filename in os.listdir(pic_folder_path): if filename.endswith(".jpg"): pic_path = os.path.join(pic_folder_path, filename) result = main(pic_path) # 调用主函数获取结果 if "result" not in result or "face_list" not in json.loads(result)["result"]: continue result_dict = json.loads(result)["result"]["face_list"] for item in result_dict: output_list.append({ "filename": filename, "type": item["emotion"]["type"] }) # 将结果保存为csv文件 with open("output.csv", "a", newline="") as f: writer = csv.DictWriter(f, fieldnames=["filename", "type"]) #writer.writeheader() writer.writerows(output_list)

可以在获取结果前加一个while循环，判断result是否有结果，如果没有结果则重新调用main函数，直到有结果为止。修改后的代码如下：

import csv
import os
import json
from IPython import display

pic_folder_path = "./期末作业-面部数据/face_images/a1"
output_list = []

for filename in os.listdir(pic_folder_path):
    if filename.endswith(".jpg"):
        pic_path = os.path.join(pic_folder_path, filename)
        result = None
        while not result or "result" not in result or "face_list" not in json.loads(result)["result"]:
            result = main(pic_path)  # 调用主函数获取结果
        result_dict = json.loads(result)["result"]["face_list"]
        for item in result_dict:
            output_list.append({
                "filename": filename,
                "type": item["emotion"]["type"]
            })

# 将结果保存为csv文件
with open("output.csv", "a", newline="") as f:
    writer = csv.DictWriter(f, fieldnames=["filename", "type"])
    # writer.writeheader()
    writer.writerows(output_list)

这样修改后，如果result没有结果，就会重新调用main函数，直到有结果为止。