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How to select rows from a DataFrame based on column values?
...t. For your question, you could do df.query('col == val')
Reproduced from http://pandas.pydata.org/pandas-docs/version/0.17.0/indexing.html#indexing-query
In [167]: n = 10
In [168]: df = pd.DataFrame(np.random.rand(n, 3), columns=list('abc'))
In [169]: df
Out[169]:
a b ...
Changing default encoding of Python?
I have many "can't encode" and "can't decode" problems with Python when I run my applications from the console. But in the Eclipse PyDev IDE, the default character encoding is set to UTF-8 , and I'm fine.
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How to move a git repository into another directory and make that directory a git repository?
...--depth 1 newrepo gitrepo1; rm -rf gitrepo1/.git
# Or (look further here: http://stackoverflow.com/q/1209999/912144)
$ git archive --format=tar --remote=<repository URL> HEAD | tar xf -
Once you create newrepo, the destination to put gitrepo1 could be anywhere, even inside newrepo if you ...
How do I break out of nested loops in Java?
I've got a nested loop construct like this:
35 Answers
35
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Iterating through a Collection, avoiding ConcurrentModificationException when removing objects in a
We all know you can't do the following because of ConcurrentModificationException :
26 Answers
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How to dynamically change a web page's title?
...title and other meta tags from javascript (you can also add something like https://prerender.io if you want to support non-Google search engines), just make them accessible as separate urls (otherwise how Google would know that those are different pages to show in search results?). Changing SEO rela...
What are the benefits to marking a field as `readonly` in C#?
What are the benefits of having a member variable declared as read only? Is it just protecting against someone changing its value during the lifecycle of the class or does using this keyword result in any speed or efficiency improvements?
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How to handle :java.util.concurrent.TimeoutException: android.os.BinderProxy.finalize() timed out af
...cs.Bitmap$BitmapFinalizer.finalize() timed out after 10 seconds
org.apache.http.impl.conn.SingleClientConnManager.finalize() timed out after 10 seconds
java.util.concurrent.ThreadPoolExecutor.finalize() timed out after 10 seconds
android.os.BinderProxy.finalize() timed out after 10 seconds
android.g...
Xcode 6 Storyboard the wrong size?
Built a new project from scratch in Swift in Xcode 6 (Beta 1) and have seen some strange behaviour with Storyboards and the output that I am viewing.
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'AND' vs '&&' as operator
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Depending on how it's being used, it might be necessary and even handy.
http://php.net/manual/en/language.operators.logical.php
// "||" has a greater precedence than "or"
// The result of the expression (false || true) is assigned to $e
// Acts like: ($e = (false || true))
$e = false || true;
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