# create tuples with college id # and name and store in a list data=[ (1,'sravan'), (2,'ojaswi'), (3,'bobby'), (4,'rohith'), (5,'gnanesh')] # get first element using zip print(list(zip(*data))[0]) 输出: (1,2,3,4,5) 方法3:将地图与itemgetter()方法一起使用 这里...
#1. 列表（list）：my_list=[1,2,3]my_tuple=tuple(my_list)print(my_tuple)# 输出: (1, 2,...
defremove(self, *args, **kwargs):"""Remove an element from a set; it must be a member. If the element is not a member, raise a KeyError."""pass删除集合中指定元素,如果集合不包含该元素,则抛出KeyError异常。defsymmetric_difference(self, *args, **kwargs):"""Return the symmetric differen...
Also, you can access any element of the list by its index which is zero based.third_elem = mylist[2]There are some similarities with strings. You can review the Python programming basics post.Mutable Lists/改变列表Lists are mutable because items can be changed or reordered....
In another way, you can get the last N elements from a list using list slicing. For example, you first get the length of the list using the len() function. you then subtract N from the length of the list to get the starting index for our slice. You use this starting index to ...
[4,2,0,2,4]>>># call a method on each element>>>freshfruit=[' banana',' loganberry ','passion fruit ']>>>[weapon.strip()forweaponinfreshfruit]['banana','loganberry','passion fruit']>>># create a listof2-tupleslike(number,square)>>>[(x,x**2)forxinrange(6)][(0,0),...
Tuple is similar to List in python language, both are sequential, index based data structure. The main difference between tuples and list is that tuples are immutable i.e. we cannot modify a tuple’s content but List is mutable data structure. Also, tupl
When sorting a list of tuples, Python sorts them by the first elements in the tuples, then the second elements, and so on. To effectivelysort nested tuples, you can provide a custom sorting key using thekeyargumentin thesorted()function. ...
classCustomTuple(tuple):def__class_getitem__(cls,index):ifindex==0:return'First element'elif...
#Access elements in the fruits listfruits = ['Apple', 'Banana',"Orange"]print(fruits[0]) #index 0 is the first element print(fruits[1])print(fruits[2])Output:Apple Banana Orange 但是，索引不必总是为正。如果想逆向访问列表，也就是按照相反的顺序，可以使用负索引，如下所示：#Access elements...