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Pandas DataFrame Groupby two columns and get counts
...In [56]: df.groupby(['col5','col2']).size().reset_index().groupby('col2')[[0]].max()
Out[56]:
0
col2
A 3
B 2
C 1
D 3
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Cron jobs and random times, within given hours
I need the ability to run a PHP script 20 times a day at completely random times. I also want it to run only between 9am - 11pm.
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Incrementing a date in JavaScript
...saving time; Clever Human pointed out that it would fail with November 7, 2010 in the Eastern timezone). Instead, Jigar's answer is the correct way to do this without a library:
var tomorrow = new Date();
tomorrow.setDate(tomorrow.getDate() + 1);
This works even for the last day of a month (or ye...
How to sort mongodb with pymongo
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305
.sort(), in pymongo, takes key and direction as parameters.
So if you want to sort by, let's s...
Capture keyboardinterrupt in Python without try-except
...gnal_handler(signal, frame):
print('You pressed Ctrl+C!')
sys.exit(0)
signal.signal(signal.SIGINT, signal_handler)
print('Press Ctrl+C')
forever = threading.Event()
forever.wait()
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How is the default submit button on an HTML form determined?
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answered May 29 '09 at 10:41
Andrzej DoyleAndrzej Doyle
95.5k2929 gold badges181181 silver badges224224 bronze badges
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List of ANSI color escape sequences
On most terminals it is possible to colorize output using the \033 ANSI escape sequence.
5 Answers
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Are there legitimate uses for JavaScript's “with” statement?
...osure in a loop is a common task where this can lead to errors:
for (var i=0; i<3; ++i)
{
var num = i;
setTimeout(function() { alert(num); }, 10);
}
Because the for loop does not introduce a new scope, the same num - with a value of 2 - will be shared by all three functions.
A new scope: l...
Why is a combiner needed for reduce method that converts type in java 8
...ch; int cannot be converted to java.lang.String. Actually, I think passing 0 as the identity value is also wrong here, since a String is expected (T).
Also note that this version of reduce processes a stream of Ts and returns a T, so you can't use it to reduce a stream of String to an int.
The thr...