To delete the last element from the list we can just use the negative index,e.g-2and it will remove the last 2 elements from the list without knowing the length of the list. my_list = ['a','b','c','d','e']delmy_
We delete the first and the last element of the list. vals = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] del vals[0:4] Here, we delete a range of integers. $ ./main.py ['cup', 'new', 'war', 'wrong', 'crypto', 'forest', 'water'] [4, 5, 6, 7, 8, 9, 10] ...
# Remove the element with the value 5 from the listmy_list.remove(5) We can also use thepop()function. # Removes the last element from the listlast_element=my_list.pop() We can also use thedelkeyword. In each of the above cases, the new list will be[1, 2, 3, 4]after the ...
if currentItem == lastItem: list.remove(currentItem) else: lastItem = currentItem return list 方法2,设一临时列表保存结果,从头遍历原列表,如临时列表中没有当前元素则追加: def deleteDuplicatedElementFromList2(list): resultList = [] for item in list: if not item in resultList: resultList.appe...
If theelementdoesn't exist, it throwsValueError: list.remove(x): x not in listexception. Return Value from remove() Theremove()doesn't return any value (returnsNone). Example 1: Remove element from the list # animals listanimals = ['cat','dog','rabbit','guinea pig'] ...
Method-2: Remove the first element of the Python list using the pop() method Thepop()method is another way to remove an element from a list in Python. By default,pop()removes and returns the last element from the list. However, we can also specify the index of the element to be re...
Map returns an interator from a list y = map(lambda i: i ** 2, list) decorator装饰器 装饰器是把一个要执行的函数包含在wrapper函数里面,并且在要执行的函数前后去执行代码 classmethod和staticmethod staticmethod不需要已经实例化的类的函数来作为输入,可以传入任何东西。method中不使用self就不会改变class ...
Insert an item at a given position. The first argument is the index of the element before which to insert, soa.insert(0,x)inserts at the front of the list, anda.insert(len(a),x)is equivalent toa.append(x). list.remove(x) 删除list的第一个x数据 ...
arguments: list object, new element returns: 0 if OK, -1 if not app1: n = size of list call list_resize() to resize the list to size n+1 = 0 + 1 = 1 list[n] = list[0] = new element return 0 1. 2. 3. 4. 5. ...
Write a Python program to remove duplicate sublists from a list of lists. Go to: Python Data Type List Exercises Home ↩ Python Exercises Home ↩ Previous:Write a Python program to get a list, sorted in increasing order by the last element in each tuple from a given list of non-empt...