save project

diy2.py

+username = "python"
+userpassword = "123456"
+c=3
+while True:
+    if c==0:
+        print('恭喜你机会用完，账户锁定')
+        exit()
+    print('还剩'+str(c)+'次机会')
+    name = input("请输入用户名:")
+    password = input("请输入密码:")
+    if name!=username:
+        print('用户名错误，请重新输入!')
+        c=c-1
+        continue
+    elif password!=userpassword:
+        print('密码错误，请重新输入！')
+        c=c-1
+        continue
+    else:
+        break
+print("登录成功!")
+