save project

f.py

+i=3
+username="python"
+userpassword="123456"
+while True:
+    if i>0:
+        name=input("用户名:")
+        password=input("密码:")
+        i-=1
+    if name=username and password=userpassword
+        print("登陆成功！")
+        break
+    if name !=username:
+        print("用户名错误，重新输入！")
+        print("您还有"+str(i)次")
+        continue
+    if  password  !=userpassword:
+    print("密码有误，重新输入！")
+    print("您还有"+str(i)次")