save project

1.py

+import turtle
+pen=turtle.Pen()
+pen.pensize(5)
+pen.pencolor("blue")
+pen.circle(50)
+
+pen.pencolor("black")
+pen.
+turtle.done()
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diy1.py

-username = "python"    # 保存在服务器数据库中的用户账号（正确的账号）
-userpassword = "123456"    # 保存在服务器数据库中的用户密码（正确的密码）
-
-# 请用input()实现用户输入账号、密码的功能
-
-
-
-# 如果用户输入的账号、密码正确，提示登陆成功
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+i=2
+username = "python"   
+userpassword = "123456"
+while True:
+    if i>0:  
+        name=input("请输入帐号")
+        password=input("请输入密码")
+        i-=1
+        if username==name and userpassword==password:
+            print("输入成功")
+            break
+        if username!=name:    
+            print("帐号错误")
+            continue
+        if userpassword!=password:
+            print("密码错误")
+    else:
+        print("你的账号密码已冻结")
+        exit()    
+print("欢迎进入")
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