update window code and update function picture

X1/StuSys_X1_1.py

@@ -1,7 +1,6 @@
 import pymysql
 
-# 创建mysql连接
-conn = pymysql.connect(user="root", password="cyh0110", host="127.0.0.1", port=3306)
+
 def create_database():
     cursor = conn.cursor()    # 创建游标
     cursor.execute("DROP DATABASE IF EXISTS SCT")
@@ -49,8 +48,9 @@ def create_table():
     """)
     cursor.close()
 
-conn.close()    # 关闭链接
 
 if __name__ == '__main__':
+    conn = pymysql.connect(user="root", password="cyh0110", host="127.0.0.1", port=3306)
     create_database()
     create_table()
+    conn.close()  # 关闭链接

X5/StuSys_X5_14.py

@@ -297,8 +297,9 @@ if __name__ == '__main__':
                                 (screenheight - root_attr['height']) / 2)
     root.geometry(alignstr)
     root.resizable(width=False, height=False)
-    output = GraphvizOutput()
+    output = GraphvizOutput(font_size=30)
     output.output_file = "basic.png"
+    output.group_font_size = 40
     config = Config()
     config.trace_filter = GlobbingFilter(include=[
         'StuSys_X4.*',