save project

diy1.py

+i=3
 username = "python"    
 userpassword = "123456"
 while True:
-    a=input("请输入账号:")
-    b=input("请输入密码:")
-    if a==username and b==userpassword:
-        print("登录成功")
-        break
-    if a!=username:
-        print("账号错误，重新输入")
-        continue
-    if b!=userpassword:
-        print("密码错误，重新输入")
+    if i>0:
+        a=input("请输入账号:")
+        b=input("请输入密码:")
+        i=i-1
+        if a==username and b==userpassword:
+            print("登录成功")
+            break
+        if a!=username:
+            print("账号错误，重新输入")
+            continue
+        if b!=userpassword:
+            print("密码错误，重新输入")
+    else:
+        print("您的账户已被锁定，请带身份证到我司解锁")
+        exit()
 print("欢迎来到贝尔编程！")
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