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(L): print index, item #3 L = ['foo', 'bar', 'bas'] for index in reversed(range(len...
last_user = Noneresult = []for line in f: if line.startswith("[USER"): last_user = line result.append(last_user) 格式Python numpy数组输出 您可以使用np.set_printoptions设置格式: import numpy as npdef mult_list_with_x(liste, skalar): print(np.array(liste) * skalar)liste = [1, 1.5...
for index,value in enumerate(lst): position = order[index] - 1 new_list[position] = value if reverse==True: return new_list[::-1] else: return new_list list=['python','is','very','good','code'] numValue=[3,2,1,5,4] print(sort_by(list, numValue)) print(sort_by(list, ...
order = [] for i in strA: order.append(i) order.reverse() #将列表反转 print ''.join(order) #将list转换成字符串执行结果: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 请输入需要翻转的字符串:abcdeggsdd ddsggedcba2、分别输出字符串中奇数坐标和偶数坐标的字符 最简单的方法是...
您还可以利用sorted()以排序和反向顺序遍历字符串: >>> >>> for vowel in sorted(vowels, reverse=True): ... print(vowel) ... ... u o i e a 该reverse给的说法sorted()可以让你排序iterables,包括字符串,按降序排列。因此,如果您需要按逆字母顺序排序的字符串字符,那么sorted()适合您。
l=list(s)## 列表翻转 l.reverse()##将列表中的数字逐个输出,组合成字符串 s=''foriinrange(len(l)):s=s+l[i]print(s) 以上就是python反向输出数字的方法,本篇的输出数字和列表的操作密不可分,建议大家先对列表模块的内容有所掌握,再回过头学习反向输出数字的操作。
position = order[index] -1new_list[position] = valueifreverse==True:returnnew_list[::-1]else:returnnew_list a = ['Lee','Bush','Danny','Juan','James','Liam'] b = [3,2,6,4,1,5]print(sort_by(a, b))# ['James', 'Bush', 'Lee', 'Juan', 'Liam', 'Danny']print(sort_...
reverse() print("Updated List:") print(list_of_lists) CopyOutput:Original List: [[1, 2], [3, 4], [5, 6]] Updated List: [[5, 6], [3, 4], [1, 2]] Python list reverse() Method FAQ1. What does the Python list reverse() method do?
print(dir(list)) ['__add__', '__class__', '__class_getitem__', '__contains__', '__delattr__', '__delitem__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__getitem__', '__gt__', '__hash__', '__iadd__', '...
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?