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How to access pandas groupby dataframe by key
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Wes McKinney (pandas' author) in Python for Data Analysis provides the following recipe:
groups = dict(list(gb))
which returns a dictionary whose keys are your group labels and whose values are DataFrames, i.e.
groups['foo']
will yield what you are looking for:
A B ...
Selecting pandas column by location
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Will using goto leak variables?
...It is a myth that goto is some low-level construct that allows you to override C++'s built-in scoping mechanisms. (If anything, it's longjmp that may be prone to this.)
Consider the following mechanics that prevent you from doing "bad things" with labels (which includes case labels).
1. Label sc...
How to remove the querystring and get only the url?
...or loads of extentions or functions. I used this to get the current called file name. $base = basename($_SERVER['REQUEST_URI']); $page = substr($base, 0, strrpos($base, "?"));
– Rob
May 20 '13 at 14:26
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Compare if BigDecimal is greater than zero
... scale (e.g. it evaluates to 0.00 instead of 0). You probably want to consider that it's equal to zero. The compareTo() method will indeed do this. But the equals() method will not. (Another proof, if any were needed, that Loki or one of his avatars is alive and well and has moved into software de...
What is the correct value for the disabled attribute?
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For XHTML, <input type="text" disabled="disabled" /> is the valid markup.
For HTML5, <input type="text" disabled /> is valid and used by W3C on their samples.
In fact, both ways works on all major browsers.
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Capturing Ctrl-c in ruby
...s as a way to pick out a specific exception, then using that exception outside of the rescue bodies.)
– Tim Snowhite
Jan 20 '10 at 18:37
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What does the filter parameter to createScaledBitmap do?
The declaration of android.graphics.Bitmap.createScaledBitmap is
4 Answers
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How to get the index of a maximum element in a numpy array along one axis
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This didn't work for me... Do you mean indices = np.where(a==a.max()) in line 3?
– atomh33ls
Jul 7 '14 at 10:32
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Check if class already assigned before adding
...cepted answer with a little added detail.
You're trying to optimise by avoiding an unnecessary check, in this regard here are factors you must be aware of:
it's not possible to have duplicate class names in the class attribute by means of manipulating a DOM element via JavaScript. If you have cla...