save project

go.py

 username="xxx"
 userdassword="123456"
 while True:
-  name=input("xxxx")
-  dassword=input("1111")
-  if username==name and userdassword==dassword:
-     print("c   ")
-     break
-  elif username!=name:
-     print("用户名错了")
-  else:
-     print("账号错误")
\ No newline at end of file
+   name=input("xxxx")
+   i=0
+   dassword=input("1111")
+   if i<=3:
+      if username==name and userdassword==dassword:
+         print("c   ")
+         break
+         i=i+1
+      elif username!=name:
+         print("用户名错了")
+         i=i+1
+      else:
+         print("账号错误")
+         i=i+1
+   else:
+      print("bb ")
+      exit()