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Pandas aggregate count distinct
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How about either of:
>>> df
date duration user_id
0 2013-04-01 30 0001
1 2013-04-01 15 0001
2 2013-04-01 20 0002
3 2013-04-02 15 0002
4 2013-04-02 30 0002
>>> df.groupby("date").agg({"duration": np.sum, "user_id...
Using CSS how to change only the 2nd column of a table
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answered Mar 29 '10 at 0:04
Nick Craver♦Nick Craver
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Using {} in a case statement. Why?
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Macke
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answered Nov 17 '13 at 13:25
RotemRotem
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Fragment transaction animation: slide in and slide out
...ation XML files in res > anim
enter_from_left.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<translate
android:fromXDelta="-100%p" android:toXDelta="0%"
android:fro...
Open a file from Cygwin
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answered Feb 23 '09 at 13:51
erichuierichui
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Alter MySQL table to add comments on columns
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answered Jan 29 '10 at 14:18
RufinusRufinus
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SQLite string contains other string query
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Maksim Turaev
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answered Aug 17 '10 at 2:17
OMG PoniesOMG Ponies
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The way to check a HDFS directory's size?
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UIImage: Resize, then Crop
...h;
CGFloat targetHeight = targetSize.height;
CGFloat scaleFactor = 0.0;
CGFloat scaledWidth = targetWidth;
CGFloat scaledHeight = targetHeight;
CGPoint thumbnailPoint = CGPointMake(0.0,0.0);
if (CGSizeEqualToSize(imageSize, targetSize) == NO)
{
CGFloat widthFact...
Responsive website zoomed out to full width on mobile
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edited Jun 30 '17 at 16:51
Cœur
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