save project

diy1.py

+i=3
 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
 while True:
 while True:
-    name = input("请输入用户名：")
-    password = input("请输入用密码：")
-    if name == username and password == userpassword
-        print("登录成功！")
-        break
-    if name!=username:
-    print("用户名错误，请重")
-    continue
-    if password!=userpassword:
-        print("密码错误！请重新输入")
+    if i>0
+        name = input("请输入用户名：")
+        password = input("请输入用密码：")
+        i-=1
+        if name == username and password == userpassword
+             print("登录成功！")
+             break
+        if name!=username:
+            print("用户名错误，请重新输入")
+            print("还有"+str(i)+"次机会)"
+            continue
+        if password!=userpassword:
+            print("密码错误！请重新输入")
+            print("还有"+str(i)+"次机会)"
+    else:
+        print("错误次数超限")
+        exit()
 print("欢迎来到贝尔编程")
 print("欢迎来到贝尔编程")