I have a list of filenames in python and I would want to construct a set out of all the filenames. filelist= [] for filename in filelist: set (filename) This does not seem to work. How can do this?

I'm trying to make a set of sets in Python. I can't figure out how to do it. Starting with the empty set xx:

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 creates an empty dictionary, a data structure that we discuss in the next …

I am trying to convert a set to a list in Python 2.6. I'm using this syntax:

Aug 12, 2015 · The set() builtin expects an iterable type argument. In python, strings can be treated as iterable objects where each character is an element. Attempting to create a set("my_string") will …

Apr 15, 2017 · 109 By all means, please use set() to create an empty set. But, if you want to impress people, tell them that you can create an empty set using literals and * with Python >= 3.5 (see PEP …

Mar 21, 2012 · When you create a set from a list, Python has the liberty to change the order of the elements for the needs of the internal implementation it uses for a set, which is able to perform set …

I have a Python list variable that contains strings. Is there a function that can convert all the strings in one pass to lowercase and vice versa, uppercase?

a=set(sf['Status']) print a According to this webpage, this should work. How to construct a set out of list items in python?

Apr 21, 2014 · Note that only dict, set and frozenset have the built-in copy() method. It would probably be a good idea that lists and strings had a copy() method too, for uniformity and readability.