fix no rich

main.py

@@ -13,6 +13,13 @@ from typing import Callable, List, Optional
 
 import pandas as pd
 
+try:
+    from rich.markdown import Markdown
+    from rich import print
+    RICH = True
+except ImportError:
+    print("Some function in console may disabled due to no rich.")
+    RICH = False
 
 class Lessons(URP):
     def __init__(self):
@@ -412,12 +419,9 @@ class Grade(URP):
                     
                     t = "\n".join(t)
                     sc_send("成绩发布",t)
-                    try:
+                    if RICH:
-                        from rich.markdown import Markdown
-                        from rich import print
                         print(Markdown(t))
-                    except ImportError:
+                    else:
-                        print("Cannot import rich, show markdown directly.")
                         print(t)
                     grades = new
                     if err > 0: err-=1
@@ -441,7 +445,7 @@ class Grade(URP):
             
 
 if __name__ == "__main__":
-    les = Lessons()
+    # les = Lessons()
-    les.auto_spider()
+    # les.auto_spider()
-    # gra = Grade()
+    gra = Grade()
-    # gra.auto_check()
+    gra.auto_check()