tuple一般在中文中称为元组，或者说n元组。就是由n个元素组成的一种有序数据结构（当然n是不小于零的整数）。不同的编程语言对元组有不同实现，但既然标签打的Python，那就只谈和Python中的元组 …

Sep 9, 2014 · A tuple is a good way to pack multiple values into that cookie without having to define a separate class to contain them. I try to be judicious about this particular use, though.

A tuple is a sequence of immutable Python objects. Tuples are sequences, just like lists. The differences between tuples and lists are, the tuples cannot be changed unlike lists and tuples use parentheses, …

Feb 17, 2018 · 3 A tuple is an immutable list. This means that, once you create a tuple, it cannot be modified. Read more about tuples and other sequential data types here.

Jun 4, 2010 · Named tuples are basically easy-to-create, lightweight object types. Named tuple instances can be referenced using object-like variable dereferencing or the standard tuple syntax. …

Have you assigned the name 'tuple' as a variable name? it should work fine. L is a list and we want to convert it to a tuple. L = [1, 2, 3] tuple (L) By invoking tuple, you convert the list (L) into a tuple. As done …

C++23有个类型叫 enumerate_view。在提案阶段有个很大的问题就是它的元素类型应该是 std::tuple 还是 struct。 最后标准委员会选择用 std::tuple。 之所以这么选择，我觉得可能有几点理由： 一是，提案 …

Jan 3, 2017 · Yes, I understand tuples are immutable but the situation is such that I need to insert an extra value into each tuple. So one of the items is the amount, I need to add a new item next to it in a

As mentioned in PythonCookbook, * can be added before a tuple. What does * mean here? Chapter 1.18. Mapping Names to Sequence Elements: from collections import namedtuple Stock = namedtuple …

The only difference is BUILD_TUPLE_UNPACK vs BINARY_ADD. The exact performance depends on the Python interpreter implementation, but it's natural to implement BUILD_TUPLE_UNPACK faster than …