save project

nijiama.py

+i=3
 username="python"
 userpassword="123456"
-name=input("请输入账号：")
-password=input("请输入密码：")
-if username==name and userpassword==password:
-    print("登陆成功")
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+while True:
+    if i>0:
+        name=input("请输入账号：")
+        password=input("请输入密码：")
+        i-=1
+        if username==name and userpassword==password:
+            print("登陆成功")
+            break
+        if username !=name:
+            print("用户名不存在，请重新输入")
+            print("您还有"+str(i)+("次剩余机会"))
+            continue
+        if userpassword !=password:
+            print("密码输入错误，请重新输入")
+            print("您还有"+str(i)+"次剩余机会")
+    else:  
+        print("输入次数已用完，请带着身份证来我司解锁") 
+        exit()   
+print("欢迎来到贝尔编程！")    

sb.py

+import turtle
+pen=turtle.Pen()
+screen=turtle.Screen()
+screen.bgcolor("black")
+colors=["red","orange","yellow","green"]
+for i in range(1,300):
+    pen.pencolor(colors[i%4])
+    pen.forward(i)
+    pen.right(91)
+pen.hideturtle()    
+turtle.done()
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