Question

我想获取不重复的最大字符串数的子列表。

下面的代码说集合是不可散列的，这很有意义（TypeError: unhashable type: 'set'），但我找不到解决这个问题的方法。

from collections import Counter
mylist = [{'task'}, {'task', 'time', 'element'}, {'task', 'current', 'time', 'element'}, {'task', 'element'}, {'task'}, {'task'}, {'task', 'element'}, {'task', 'element'}, {'task', 'element'}, {'task', 'push', 'stack', 'element'}]
find_max_lists = max(k for k,v in Counter(mylist).items() if v>1)

输入

[{'task'}, {'task', 'time', 'element'}, {'task', 'current', 'time', 'element'}, {'task', 'element'}, {'task'}, {'task'}, {'task', 'element'}, {'task', 'element'}, {'task', 'element'}, {'task', 'push', 'stack', 'element'}]

输出

[{'task', 'current', 'time', 'element'},{'task', 'push', 'stack', 'element'}]

输入

[{'task'}, {'task', 'time', 'element'}, {'task', 'current', 'time', 'element'}, {'task', 'element'}, {'task'}, {'task'}, {'task', 'element'}, {'task', 'element'}, {'task', 'element'}, {'task', 'current', 'time', 'element'}]

输出

[{'task', 'current', 'time', 'element'}]

Answer 1

您可以在没有public static class EventHubCSharpFunc { [FunctionName("EventHubCSharpFunc")] public static async Task Run([EventHubTrigger("containertestevthub", Connection = "EventGridPerfEventHun_RootManageSharedAccessKey_EVENTHUB")] EventData[] events, ILogger log) { var exceptions = new List<Exception>(); foreach (EventData eventData in events) { try { string messageBody = Encoding.UTF8.GetString(eventData.Body.Array, eventData.Body.Offset, eventData.Body.Count); // Replace these two lines with your processing logic. log.LogInformation($"C# Event Hub trigger function processed a message: {messageBody}"); await Task.Yield(); } catch (Exception e) { // We need to keep processing the rest of the batch - capture this exception and continue. // Also, consider capturing details of the message that failed processing so it can be processed again later. exceptions.Add(e); } } // Once processing of the batch is complete, if any messages in the batch failed processing throw an exception so that there is a record of the failure. if (exceptions.Count > 1) throw new AggregateException(exceptions); if (exceptions.Count == 1) throw exceptions.Single(); } }的情况下进行操作。由于列表包含集合，并且集合中不包含重复项，因此只需检查输入列表中长度最大的set-item，然后创建另一个列表，使其长度与最大长度匹配。

是这里：

Counter

输出：

max_len = len(sorted(mylist, key = lambda x: len(x), reverse = True)[0])
output = [k for k in mylist if len(k)==max_len]
# For the second case where the final list may contain same set-item
uniq_list = [set(x) for x in set(tuple(x) for x in output)]

如何找到具有最大元素数的最大字符串类型子列表（非重复）？

1 个答案: