save project

diy2.py

+u = "p"
+s = "1"
+i=3
+while True:
+    if i>0:
+        ua = input("请输入用户名:")
+        sa = input("请输入密码:")
+        i=i-1
+        if ua == u and sa == s:
+            print("登录成功!")
+            break
+        if u!=ua:
+            print("用户名错误!")
+            print("用户名错误!+你还有+str(i)+三次机会")
+            i=i-1
+            continue
+            i-=1
+        if s!=sa:
+            print("密码错误!")
+            print("用户名错误!+你还有+str(i)+三次机会")
+            i-=1
+    else:              
+        print("滚！")
+        exit()
+print("欢迎来到贝尔编程!")
\ No newline at end of file