python delete element from list

Let's look at an example:Test1 = [' A ', ' B ', ' C ', ', '] for in test1: if': test1.remove (i) #删除空元素 Print (test1)>>>[' A ', ' B ', ' C ', ']At this point, we found that we did not achieve the results we want, the reasons are as follows:To understand the data structure of a Python list, the list belongs to a continuous linear table, which is contiguo

Let's take a list of elements of a string as an example, and delete the elements:>>> l = [‘no surfing‘, ‘flippers‘] 1 Law One: Remove (val)>>> l.remove(‘no surfing‘)>>> l[‘flippers‘] 1 2 3 (1) The parameter of remove () is a specific element value, not an index, (2) If you know the index, how to use Remove to

', ' 0 ', ' 0 ', ' 1 ', ' 24 ', ' 3 ', ' 0 ', ' 0 '],[' 50001 ', ' 0 ', ' 0 ', ' 20100506 ', ' 20141230 ', ' 1 ', ' 2 ', ' 67 ', ' 0 ', ' 0 ', ' 44 ', ' 6 ', ' 1 ', ' 4 ', ' 1 '],[' 69001 ', ' 0 ', ' 0 ', ' 20100524 ', ' 20150129 ', ' 16 ', ' 20 ', ' 90 ', ' 2 ', ' 220 ', ' 236 ', ' 44 ', ' 18 ', ' 3 ', ' 2 '],[' 71001 ', ' 0 ', ' 2 ', ' 20100526 ', ' 20141224 ', ' 9 ', ' + ', ' 0 ', ' 0 ', ' arrays ', ' 4 ', ' 7 ', ' One ', ' Every_list ']]for: #add col num ber for I in range (len (every_list

Someone will encounter this kind of problem, traverse the list, want to delete some elements of the list, after execution found that some are not deleted to,such as the following codea=[1,2,3,4,5,6]Print (a) for in A: ifor i==4: a.remove (i)Print (a)The main thing to look at in code is to delete the 3 4 eleme

Pop () methodPHP (N)Delete an element from listPaul's classmates had to turn away a few days ago, so how do we remove Paul from the existing list?If Paul's classmates were in the last one, we could use the pop () method of list to delete:>>> L = [' Adam ', ' Lisa ', ' Bart '

Python list Delete element Python deletes elements in several ways Mode one: Using the Del method Python code >>> names=[' Alice ', ' Beth ', ' Cecil ', ' Dee-dee ', ' Earl '] >>> names [' Alice ', ' Beth ', ' Cecil ', '

Add an element to the listAppend (): Add a new element to the array example: Array.append (' fearless ') array represents a custom listExtend (): List of new elements in the field: Array.append ([' Fearless ', ' lishizhen ') array represents a custom listInsert: To list the new elements in the field: Array.insert (0, '

This article mainly introduces how to use the remove () method to delete elements in the Python list. It is the basic knowledge in the Python getting started. Pay attention to the differences between it and the pop () method, you can refer to the remove () method to delete t

How to implement an infinite element list in Python, and an infinite element list in python The example in this article describes how to implement the infinite element

Python finds out the most common element in the list, and python finds out the list element. This example describes how to find the most common element in the

. The Push_back function is commonly used in the initialization of a list container.Traversal access of elementsBecause elements in the list need to be traversed by elements, the traversal of thelist element can only be done using iterators. #include Insertion of list elementsBecause the insertion of the

First of all, this is a very simple question, Daniel can ignore, novice may encounter, Java in the traversal of a list when deleting the list element throws an exception.This is a simple problem to master seriously insignificant, but novice may be more confused, in which way can be safely and effectively implement Traverse li