How to delete a list from a set?


I'm quite new to python and am trying to make a kind of 20Q thing, but am struggling - anybody know how to delete a list from a set, or if not a list from a list?


Thanks :)
From the [Library Reference](http://docs.python.org/2/library/stdtypes.html#set-types-set-frozenset):



> 
> The set type is mutable — the contents can be changed using methods like add() and remove().
> 
> 
>
in mac os x 10.5 leopard (and previous versions like 10.4 tiger and 10.3 panther) there are several ways to un-install applications.
heres a couple
a. simply drag the application to the trash, (you might need to enter your password) and empty the trash. bam! thats all!

or

you can download a program that completely erases the entire program from your system (because the programs sometimes leave something called preference files, in your system, so when their installed again, you'll have them back the same way it was before)

b. download the application "app delete" (http://www.versiontracker.com/dyn/moreinfo/macosx/31123), download it, install it, and open it. *it will open, and all you have to do is drag any application you want to uninstall to the icon in the dock. (you might have to enter your password), and thats it!

as for keyboard shortcuts, i know, they can get confusing, but its really just down to how much you use them.

here is the direct apple link to their keyboard shortcuts for mac os x

http://docs.info.apple.com/article.html?artnum=75459

lets take a shortcut for example.. such as this one 

option-shift-command-delete - which empties the trash without you needing to confirm it (it'll just empty it immediately)

this is the keyboard layout on mac's
http://developer.apple.com/documentation/hardware/developer\_notes/macintosh\_cpus-g4/12inchpowerbookg4/art/040945021715\_06.gif

option - is the 'alt' button on your apple keyboard.
shift - is the 'shift' button on your apple keyboard
command- is the command (is an infinity symbol) / apple logo (apple logo may or may not be there, depending on the keyboard you are using, but its still the same)
delete - delete key lol

press them together, and presto! trash is emptied!

theres the quick guide!

=)

-hope i helped

-ken. according to python idiomatic, its better to ask for forgiveness (except) then for permission (if). which would make your solution a better fit

however, i disagree with the slicing used in both solutions. you have the index, so its easy to update an element at an index:

the\_list[index] = 'new valu… i wouldn’t touch the python. add it into a custom node so you can make use of list levels and lacing instead. th is will also make it easier to maintain your code over time. [image] sgenter:

is there another way to zip off a chapter with the new version of bookdown? alternatively, how would i revert to the previous version?

this is a pretty specific use case and don't know yet about. so i don't think you can "zip" the way you want

[image] sgenter:

i do reali… Shawn,
 
If no brighter suggestions appear, you may try the list:
 
 
 
THE LIST
 
 
If things that should work simply refuse to (all possibilities exhausted including the A) - D) below (and carefully making sure you are performing (all) the needed things)), you may try (the relevant part(s) of) the list 1) - 8 ) below.
 
 
Sometimes, (certain) things may fail or stop working for no apparent reason. When the (other) possible reasons/cures fail to work, it may be some kind of (temporay or permane... Yes.  Go to the 'Privacy' tab, scroll down until you see the list of people on the Trusted List.  Put a tick in the box next to the person/people you want to remove, then scroll down a bit further and click on the dark green button 'Remove Selected People'. i counted 54 elements in your ‘locations’ array.

now when i look at the ‘z’ array, i technically find 108 elements.

judging by your syntax, did you meant to use a ‘,’ to separate thousands and hundreds? (but python interprets it as a separation in a list) [@camgarciarafael](/u/camgarciarafael) you cannot remove the first document in your associated documents list. i guess mn considers it a core document of some sort. basically each study requires you to have one document and mn just picks the first in the list as that one that is required.

you can work around it by reord… Katy.  Please try double-tapping it (that will enable it without you having to continue to hold it) and see if you're getting the same response with erasing.  The more information I can share with the team, the easier it is for them to look into it.  Sue. i've been meaning to write a blog post on this for a while, but haven't got round to it yet, so i'll give the condensed version here :slight\_smile:

to understand why the if let syntax is the way it is, we should first look at the let syntax. in most cases, you'll see it used for simple variable dec…