save project

diy2.py

+username = "python"
+userpassword = "123456"
+i=3
+while True:
+    if i<=0:
+       print('机会用完，账户锁定')
+       exit()
+    print('还剩'+str(i)+'次机会')
+    name=input('请输入用户名：\n')   
+    password = input("请输入密码:")
+    if name!= username:
+        print("用户名错误，重新输入！")
+        i=i-1
+        continue
+    elif password!=userpassword:
+        print('密码错误，重新输入！')
+        i=i-1
+        continue
+    else:
+        break
+print("欢迎来到贝尔编程!")
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