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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 ...
Converting PKCS#12 certificate into PEM using OpenSSL
...penssl pkcs12 -in path.p12 -out newfile.pem -nodes
Or, if you want to provide a password for the private key, omit -nodes and input a password:
openssl pkcs12 -in path.p12 -out newfile.pem
If you need to input the PKCS#12 password directly from the command line (e.g. a script), just add -passin pa...
How do I work with a git repository within another repository?
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Consider using subtree instead of submodules, it will make your repo users life much easier. You may find more detailed guide in Pro Git book.
share
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Is there a portable way to print a message from the C preprocessor?
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
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C/C++ macro string concatenation
... the language level, and it wouldn't work anyway because "s""1" isn't a valid preprocessor token.
[Edit: In response to the incorrect "Just for the record" comment below that unfortunately received several upvotes, I will reiterate the statement above and observe that the program fragment
#define ...
How can I see all the issues I'm watching on Github?
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Thanks, solved the problem for me! Besides, there is Advanced search that can help filter the search results: github.com/search/…
– lagivan
Nov 26 '15 at 13:08
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How to get a pixel's x,y coordinate color from an image?
...of your PNG. The following creates an off-screen canvas that is the same width and height as your image and has the image drawn on it.
var img = document.getElementById('my-image');
var canvas = document.createElement('canvas');
canvas.width = img.width;
canvas.height = img.height;
canvas.getConte...
What is the purpose of the “Prefer 32-bit” setting in Visual Studio and how does it actually work?
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@BrianDavidBerman there is, if you set false to 32-but preferred and set x64 or Any CPU on a 64-bit machine.
– Lex Li
Aug 4 '16 at 14:49
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Setting global styles for Views in Android
...ually, you can set a default style for TextViews (and most other built-in widgets) without needing to do a custom java class or setting the style individually.
If you take a look in themes.xml in the Android source, you will see a bunch of attributes for the default style for various widgets. The k...
How do you get the index of the current iteration of a foreach loop?
...numeration, and cannot be done." -- This is nonsense, as the answers by David B and bcahill make clear. An index is an enumeration over a range, and there's no reason one cannot enumerate two things in parallel ... that's exactly what the indexing form of Enumerable.Select does.
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