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Selecting multiple columns in a pandas dataframe
I have data in different columns but I don't know how to extract it to save it in another variable.
18 Answers
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How can I list ALL DNS records?
...@ns1.google.com google.com axfr
If you have control of the zone, you can set it up to get transfers that are protected with a TSIG key. This is a shared secret the the client can send to the server to authorize the transfer.
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Removing multiple keys from a dictionary safely
...mber of keys you're deleting, it might be more efficient to use for key in set(the_dict) & entries: and bypass the key in dict test.
– DylanYoung
Apr 15 at 15:30
add a com...
How do I cancel a build that is in progress in Visual Studio?
...e a Pause/Break key, you can go to Tools -> Options -> Keyboard then set an extra mapping for the Build.Cancel command.
– Sean Colombo
Jul 31 '15 at 18:32
2
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fatal: The current branch master has no upstream branch
...d that he already tried this. 2nd one: -u option is the shortcut for the --set-upstream option which has nothing to do with the creation of a new branch. From the documentation of the -u or --set-upstream option: "For every branch that is up to date or successfully pushed, add upstream (tracking) re...
How do you use String.substringWithRange? (or, how do Ranges work in Swift?)
I have not yet been able to figure out how to get a substring of a String in Swift:
33 Answers
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How to get CRON to call in the correct PATHs
...I run a Python script from shell the script runs fine as it uses the PATHs set in bashrc but when I use cron all the PATHs are not used from bashrc. Is there a file I can enter the PATHs into for cron like bashrc or a way to call the PATHs from bashrc?
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Access nested dictionary items via a list of keys?
...taDict)
and reuse getFromDict to find the location to store the value for setInDict():
def setInDict(dataDict, mapList, value):
getFromDict(dataDict, mapList[:-1])[mapList[-1]] = value
All but the last element in mapList is needed to find the 'parent' dictionary to add the value to, then use t...
Catch Ctrl-C in C
...ll.html
Note: Obviously, this is a simple example explaining just how to set up a CtrlC handler, but as always there are rules that need to be obeyed in order not to break something else. Please read the comments below.
The sample code from above:
#include <stdio.h>
#include <signal.h...
Is it possible to refresh a single UITableViewCell in a UITableView?
...tion:UITableViewRowAnimationNone];
[self.tableView endUpdates];
You can set whatever your like as animation effect, of course.
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