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Adding new column to existing DataFrame in Python pandas
...sn't necessarily say you did it wrong (it can trigger false positives) but from 0.13.0 it let you know there are more adequate methods for the same purpose. Then, if you get the warning, just follow its advise: Try using .loc[row_index,col_indexer] = value instead
>>> df1.loc[:,'f'] = pd.S...
How do I filter query objects by date range in Django?
...ple.objects.filter(date__range=[startdate, enddate])
returns all entries from startdate to enddate including entries on those dates. Bad example since this is returning entries a week into the future, but you get the drift.
startdate = datetime.today()
enddate = startdate + timedelta(days...
How to delete object from array inside foreach loop?
...; $value == 'searched_value'){
//delete this particular object from the $array
unset($array[$elementKey]);
}
}
}
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Distributed sequence number generation?
...nerate the unique IDs on the clients themselves, using an approach derived from how UUIDs and Snowflake's IDs are made. There are multiple options, but something along the lines of:
The most significant 40 or so bits: A timestamp; the generation time of the ID. (We're using the most significant bi...
Running python script inside ipython
Is it possible to run a python script (not module) from inside ipython without indicating its path? I tried to set PYTHONPATH but it seems to work only for modules.
I would like to execute
...
Why can't C compilers rearrange struct members to eliminate alignment padding? [duplicate]
...t nameLength, extraLength;
};
The packed attribute prevents the compiler from aligning the fields according to their natural alignment, and it has no relation to the problem of field ordering. It would be possible to reorder the fields of LocalFileHeader so that the structure has both minimal size...
Change key pair for ec2 instance
...buntu/.ssh/authorized_keys
Logout
Terminate micro instance
Detach volume A from it
Attach volume A back to the main instance as /dev/xvda
Start the main instance
Login as before, using your new .pem file
That's it.
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What does the “Just” syntax mean in Haskell?
...meter, which means that when used as a constructor it acts like a function from type a to Maybe a, i.e. it has the type a -> Maybe a
So, the constructors of a type build a value of that type; the other side of things is when you would like to use that value, and that is where pattern matching co...
Changing Jenkins build number
...T being done by Jenkins, so we want to be able to get the build number(ie. from a text file) and update the build number in Jenkins to match it. I have tried to set the build number:
...
get just the integer from wc in bash
... was researching how to get just the integers, and i was using information from one of the answers, when i discovered a better answer, and then decided to post about it. sorry..
– BananaNeil
Jan 31 '12 at 5:22
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