save project

1.py

+i=3
+username="孙赵"
+userpassword="1n2n3n4n3n4n"
+while True:
+    if i>0:
+        name=input("账号:")
+        password=input("密码:")
+        i-=1
+        if name==username and password==userpassword:
+            print("登录成功！")
+            break
+        if name!=username:
+            print("账号错误。")
+            continue
+        if password!=userpassword:
+            print("密码错误。")
+    else:
+        print("系统已锁定，请一会儿再试。")
+        exit()
+print("欢迎来到贝尔编程！")
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