我尝试首先打开终结器，然后以 sudo 身份执行 mininet，但我无法在终结器中为拓扑中的每个 mininet 节点创建新会话。
script -f MININET_NODE_TTYafterxterm h1将无法正常工作，因为 的输出ip -a与原始 bash 会话相同，因此我无法正确 ping 节点。
我有这个问题。
如果l仅包含0和1的列表，则找到代表1重复序列的开始和结束的所有元组。例
l=[1,1,0,0,0,1,1,1,0,1]
回答：
[（0,2），（5,8），（9,10）]
我用下面的代码解决了这个问题，但是我认为这很混乱，我想知道是否有一种更干净的方法来解决这个问题（也许使用map / reduce吗？）
from collections import deque
def find_range(l):
pairs=deque((i,i+1) for i,e in enumerate(l) if e==1)
ans=[]
p=[0,0]
while(len(pairs)>1):
act=pairs.popleft()
nex=pairs[0]
if p==[0,0]:
p=list(act)
if act[1]==nex[0]:
p[1]=nex[1]
else:
ans.append(tuple(p))
p=[0,0]
if(len(pairs)==1):
if p==[0,0]:
ans.append(pairs.pop())
else:
ans.append((p[0],pairs.pop()[1]))
return ans
我需要 DropdownButton 中的所有可用语言（带有变体，例如“英语（英国）”），我在 flutter SDK 或 dart 内置程序中找不到，所以我结束了这个网站lang_list.dart，并创建了一个包含以下内容的文件
const LANGLIST = ["Afrikaans","Afrikaans (South Africa)","Arabic","Arabic (U.A.E.)","Arabic (Bahrain)","Arabic (Algeria)","Arabic (Egypt)","Arabic (Iraq)","Arabic (Jordan)","Arabic (Kuwait)","Arabic (Lebanon)","Arabic (Libya)","Arabic (Morocco)","Arabic (Oman)","Arabic (Qatar)","Arabic (Saudi Arabia)","Arabic (Syria)","Arabic (Tunisia)","Arabic (Yemen)","Azeri (Latin)","Azeri (Latin) (Azerbaijan)","Azeri (Cyrillic) (Azerbaijan)","Belarusian","Belarusian (Belarus)","Bulgarian","Bulgarian (Bulgaria)","Bosnian (Bosnia and Herzegovina)","Catalan","Catalan (Spain)","Czech","Czech (Czech Republic)","Welsh","Welsh (United Kingdom)","Danish","Danish (Denmark)","German","German (Austria)","German (Switzerland)","German (Germany)","German (Liechtenstein)","German (Luxembourg)","Divehi","Divehi (Maldives)","Greek","Greek (Greece)","English","English (Australia)","English (Belize)","English (Canada)","English (Caribbean)","English (United Kingdom)","English (Ireland)","English (Jamaica)","English (New Zealand)","English (Republic of the Philippines)","English (Trinidad and Tobago)","English (United States)","English (South Africa)","English (Zimbabwe)","Esperanto","Spanish","Spanish (Argentina)","Spanish …