python 列表迭代
Given a list and we have to iterate it in reverse order in python.
给定一个列表，我们必须在python中以相反的顺序对其进行迭代。
Example:
例：
Input:
List = [10, 20, 30, 40, 50]
Output:
list = [50, 40, 30, 20, 10]
Input;
list = ['Hello', 10 'World', 20]
Output:
list = [20, 'World', 10, 'Hello']
以相反的顺序迭代列表
(
Iterate a list in reverse order
)
To iterate a list in reverse order,
list[::-1]
is used.
list[::-1]
will return the list in reverse order.
要以相反的顺序迭代列表，请使用list [::-1] 。 list [::-1]将以相反的顺序返回列表。
Program:
程序：
# define a list
list1 = [10, 20, 30, 40, 50]
# print the list
print "original list: ", list1
# iterate the list
list1 = list1[::-1]
# print the list
print "list in reverse order: ", list1
# another list with string and integer elements
list2 = ['Hello', 10, 'world', 20]
# print the list
print "Original list: ", list2
# iterate the list
list2 = list2[::-1]
# print the list
print "list in reverse order: ", list2
Output
输出量
original list: [10, 20, 30, 40, 50]
list in reverse order: [50, 40, 30, 20, 10]
Original list: ['Hello', 10, 'world', 20]
list in reverse order: [20, 'world', 10, 'Hello']
翻译自:
https://www.includehelp.com/python/iterate-a-list-in-reverse-order.aspx
python 列表迭代