Python: How to iterate list in reverse order #1 for index, val in enumerate(reversed(list)): print len(list) - index - 1, val #2 def reverse_enum(L): for index in reversed(xrange(len(L))): yield index, L[index] L = ['foo', 'bar', 'bas'] for index, item in reverse_enum...
my_list=[1,2,3,4,5]foriinrange(len(my_list)-1,-1,-1):print(my_list[i]) 1. 2. 3. 这段代码会产生同样的逆序遍历结果。 状态图 在实现逆序遍历的过程中,有几个重要的操作状态。以下是用状态图(stateDiagram)展示的逆序遍历状态。 StartIterateReverseOrderOutput 甘特图 逆序遍历的不同方法可以通...
Basically, thereversed()function is good when you want to iterate over a list in reverse order without creating a copy. You can also convert the iterator into a list if you need a reversed version of the list itself. numbers=[1,2,3,4,5]#Convert the iterator to a listreversed_numbers...
# 创建列表mylist=["Jacob","Harry","Mark","Anthony"]# 显示列表print("List = ",mylist)# 长度 - 1i=len(mylist)-1# 按倒序迭代print("Display the List in Reverse order = ")whilei>=0:print(mylist[i])i-=1 Bash Copy 输出 List=['Jacob','Harry','Mark','Anthony']DisplaytheListin...
Iterate over the list in reverse order section 打印元素 Print each element 使用mermaid语法展示关系图 此外,我们还可以利用mermaid语法中的erDiagram来展示列表元素之间的关系: LISTintlengthELEMENTintvaluecontains 这个关系图展示了列表(LIST)和元素(ELEMENT)之间的关系,以及列表的一些基本属性。
# Iterate over the sequence of column names #inreverse orderforcolumninreversed(stu_df.columns): # Select column contents by column # nameusing[]operatorcolumnSeriesObj=stu_df[column] print('Colunm Name :', column) print('Column Contents :', columnSeriesObj.values) ...
7.how do I iterate over a sequence in reverse order for x in reversed(sequence): … # do something with x.. 如果不是list, 最通用但是稍慢的解决方案是: for i in range(len(sequence)-1, -1, -1): x = sequence[i] 8.Python是如何进行类型转换的?
我们可以用in来循环迭代一个list当中的内容,这也是Python当中基本的循环方式。 """ For loops iterate over lists prints: dog is a mammal cat is a mammal mouse is a mammal """ for animal in ["dog", "cat", "mouse"]: # You can use format() to interpolate formatted strings print("{} is...
howdo I iterate over a sequence in reverse order 如果是一个list, 最快的解决方案是: list.reverse() try: for x in list: “do something with x” finally: list.reverse() 如果不是list, 最通用但是稍慢的解决方案是: for i in range(len(sequence)-1, -1, -1): x = sequence[i] <do ...
我们可以用in来循环迭代一个list当中的内容,这也是Python当中基本的循环方式。 """ For loops iterate over lists prints: dog is a mammal cat is a mammal mouse is a mammal """ for animal in ["dog", "cat", "mouse"]: # You can use format() to interpolate formatted strings ...