save project

1.py

-import turtle
-a = turtle.Pen()
-a.circle(180,50)
-a.
\ No newline at end of file

diy1.py

+i=3
 username='python'
 username='python'
 userpassword='123456'
 userpassword='123456'
-name = input("请输入用户名:")
-password = input("请输入密码:")
-if name == username and password == nserpassword:
-    print("登录成功!")
+while True:
+    if i>0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
\ No newline at end of file
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if name != username:
+            print("用户名不存在，请重新输入!")
+            print("温馨提示:您还有"+str(i)+"次登录机会!")
+            continue
+        if password != userpossword:
+            print("密码有误，请重新输入!")
+    else:
+        print("SB!这都整不开!大SB!")
+        exit()
+print("欢迎来到贝尔编程!")
+