Python 的 set （集合） 不可以排序，在 Python 中， set 类型在设计时，就是不保证元素的顺序的， set 是一个无序的集合数据类型。

Aug 2, 2010 · Append values to a set in Python Asked 15 years, 4 months ago Modified 1 year, 2 months ago Viewed 828k times

May 30, 2025 · I would like to know how can I set a variable with another variable in Jinja. I have got a submenu and I would like to show which link is active. I tried this: {% set active_link = {{recordtype}} -...

Mar 29, 2023 · Python修复不了也卸载不掉也安装不了怎么办? 什么先卸载再重装、先修复再重装、删掉所有python文件、重启电脑，全试过了。

Sep 14, 2025 · Python 3 documentation the same holds for python 2.7 Curly braces or the set () function can be used to create sets. Note: to create an empty set you have to use set (), not {}; the latter …

Dec 10, 2013 · Q1 - Is the following a set() of a generator expression or a set comprehension? (Or are they same? If so, are list & dict comprehensions also corresponding type-cast on generators?) …

Apr 15, 2015 · Python doesn't use + for set union because it's sort of ambiguous. Set union and set intersection could both be thought of as two different strategies for "adding" sets -- so by not …

Sep 26, 2010 · Most users of Python need to learn only the high-level usage of descriptors, and have no need to learn or understand the implementation of descriptors further. But understanding how …

May 14, 2010 · In Python, which data structure is more efficient/speedy? Assuming that order is not important to me and I would be checking for duplicates anyway, is a Python set slower than a Python …

Apr 29, 2025 · I need help with setting the limits of y-axis on matplotlib. Here is the code that I tried, unsuccessfully.