Added the ability to determine if the score is empty

main.py

@@ -110,6 +110,14 @@ else:
 
 # 第一次运行程序则运行两遍，否则运行一遍
 for _ in range(run_count):
+    # 获取成绩信息
+    grade_data = student_client.get_grade("2024").get("data", {})
+    grade = grade_data.get("courses", [])
+
+    if not grade:
+        print("成绩为空")
+        sys.exit()
+
     # 如果grade.txt文件不存在，创建文件
     if not os.path.exists("grade.txt"):
         open("grade.txt", "w").close()
@@ -128,14 +136,6 @@ for _ in range(run_count):
     with open("grade.txt", "w") as grade_file:
         grade_file.truncate()
 
-    # 获取成绩信息
-    grade_data = student_client.get_grade("2024").get("data", {})
-    grade = grade_data.get("courses", [])
-
-    if not grade:
-        print("成绩为空")
-        sys.exit()
-
     # 按照提交时间降序排序
     sorted_grade = sorted(grade, key=lambda x: x["submission_time"], reverse=True)