python delete item from list

list0=[' B ', ' C ', ' d ', ' B ', ' C ', ' A ', ' a ']Method 1: Use Set ()# sorted Output Print (List1)Method 2: Use {}.fromkeys (). Keys ()list2={}.fromkeys (list0). Keys ()print(list2)Method 3:set () +sort ()list3=List (set (LIST0)) List3.sort (Key=list0.index)print(LIST3)Method 4: IterateList4=[] for in list0: if not in list4: List4.append (i)print(LIST4)Method 5: Compare the data of adjacent 2 elements after sorting, repeat deletedef so

Requirements Description:1, the current directory has a lot of folders, files, statistics/usr/local/This directory, if it is a folder, to delete/usr/local/F1 W1 F2 W2 W3 W4 F4W1 W2 W10.txtRequirements Analysis:1, first list all the files in the directory, with Os.listdir ()2, determine if it is a file, Os.path.isfile ()ImportOsf_dir=OS.GETCWD ()#Get current directoryL_dir=os.path.join (F_dir,'usr\local')#st

The index of the list (subscript) starts at 0 and the last one can be represented by-1.1. Add ( append (), insert ())2. Delete (pop (), remove (), Del, Clear ())Stus.pop () #默认删除最后一个Stus.pop (1) #删除指定位置Stus.remove (' Nancy ') #删除list中某个元素, with repeated words, delete the first oneDel Stus[-1] #删除指定下标的元素Stus.clear () #清

Detailed descriptionFor example, there is a "check" button on the project management design item, and when you click the Check button, you bring up the list interface of the user management design item and select multiple records on the list of user management design items that are paged out.When you close the User man

MFC CListCtrl Select a row, the message is which. I can't remember. Find an article, more useful: Http://www.cnblogs.com/hongfei/archive/2012/12/25/2832806.html Lvn_begindrag the left mouse button is being triggered for drag-and-drop operations (resulting when the left mouse button starts dragging items in a list view control) Lvn_beginrdrag The right mouse button is being triggered for drag-and-drop operations (resulting when the right mouse butto

with the specified position in the list. * * @param position which data to get * @return The data associated and the specified position in the list */ Public Object getitematposition (int position) { T adapter = Getadapter (); Return (adapter = = NULL | | Position The call is GetItem (). So when defining the adapter, remember to override the GetItem (int position) methodMfo

mMutilChoiceListener = new MultiChoiceModeListener () {@ Overridepublic boolean onCreateActionMode (ActionMode mode, Menu menu) {Log. d (TAG, "onCreateActionMode, mode:" + mode + ", menu:" + menu); mActionMode = mode; getActivity (). getMenuInflater (). inflate (R. menu. menu_favorite_delete, menu); // load the menu to the ActionBar and return true;} @ Overridepublic boolean onPrepareActionMode (Acti OnMode mode, Menu menu) {return false ;}@ Overridepublic void onDestroyActionMode (ActionMode m

Reading Notes Objective c ++ Item 51 must comply with the Conventions when implementing new and delete. Item 50 explains under what circumstances you may want to implement operator new and operator delete in your own version, but does not explain the conventions you need to follow when implementing it. It is not diffic

Reading Notes Objective c ++ Item 50 it makes sense to know when to replace new and delete, too tiveitem1. Three common reasons for customizing new and delete Let's first review the basic principles. Why do people want to replace the operator new and operator delete versions provided by the compiler at the beginning? T

There are two ways to remove Qlistwidgetitem from the Qlistwidget list, but you have to choose according to your needs.The first type isQlistwidgetitem *takeitem (int row);Using this method requires that you know what item is deleted and that the deleted item pointer is returned.The second type isinline void Removeitemwidget (Qlistwidgetitem *

 "Android Swipetodismiss: Swipe left and right to delete a ListView entry item"Android Swipetodismiss is the third party open source framework on GitHub (Project link address on GitHub: Https://github.com/romannurik/Android-SwipeToDismiss). The Open source project is designed to make a ListView item delete the curren

defined in XMLFor (INT I = 0; I List. Add (LS [I]);}// Import the array to arraylistAdapter = new arrayadapter Adapter. setdropdownviewresource (Android. R. layout. simple_spinner_dropdown_item );// Set the drop-down menu styleSp. setadapter (adapter );// Bind the adapterSp. setprompt ("title bar ");// Set the title bar of the dialog boxAdd. setonclicklistener (New onclicklistener () {// Add button listener @ OverridePublicvoid onclick (view v ){// T

The example in this article describes how Android uses ListView to bulk Delete item. Share to everyone for your reference, specific as follows: Use the checkbox to select one or more item, and then delete them in bulk. The program operation effect chart is as follows: Start the code below: (The code has been corr

Item 50:understand when it makes sense to replace new and delete. In item 49, we describe how to customize thenewError-handling functions, and how to overload your classoperator new。 Now we go back to the more fundamental question, why do we need to customizeoperator newOroperator delete？ Detect usage errors.n

)); Mplayerhandler.addmessage (NewClearplayerinstance (Mcurrentplayer, This));//SetNewVideo Player Viewmplayerhandler.addmessage (NewSetnewviewforplayback (Newvideoplayerview, This));//StartNewPlaybackmplayerhandler.addmessages (Arrays.aslist (NewCreatenewplayerinstance (Videoplayerview, This),NewSetassetsdatasourcemessage (Videoplayerview, Assetfiledescriptor, This),//I Use local file forDemoNewPrepare (Videoplayerview, This),NewStart (Videoplayerview, This)));//Resume Queue ProcessingThese mes

Arrayadapter provides the Remove method to delete data from the data source and to refresh the interface. Here is its source code:public void Remove (T object) { synchronized (mLock) { if (moriginalvalues! = null) { Moriginalvalues.remove ( object); } else { Mobjects.remove (object); } } if (Mnotifyonchange) notifydatasetchanged ();//Notify Observer }Here is an exam

Today the project encounters a one-click Removal requirement for all list items in the ListView, which is recorded here.The first idea is to set an empty adapter, so that after the empty adapter assigned to the ListView, but later think it is too troublesome, went to look for the official time to give such a method.Don't say, there really is a similar way!ViewGroup class below There is a removeallviews () method, look at the name is like, tried a bit