auto save

1.py

+username = "python"
+userpassword = "123456"
+i=3
+while True:
+    if i>=1:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i-=1
+        if name == username:
+            if password == userpassword:
+                print("登录成功!")
+            else:
+                print("密码错误!请重新输入")
+        else: 
+            print("用户名错误!请重新输入")
+    else:
+        print("您的账号已锁定，请您到我公司柜台解锁")
+        exit()
+        
+    print("用户名和密码错误!请重新输入")
+print("欢迎来到贝尔编程!")
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pp.py

+import random
+p=[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15]
+i=random.choice(p)
+print(i)
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qqq.py

+import turtle#加载turtle功能
+pen=turtle.Pen()#定义画笔
+screen=turtle.Screen()#定义画布
+screen.bgcolor("pink")
+pen.forward(200)#画笔向前走200步
+ok=input("你想画多大圆")#
+okk=int(ok)
+pen.circle(okk)
+import random
+p=[50,100,150,200]
+pen.circle(random.choice(p))
+turtle.done()
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