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Should I use `import os.path` or `import os`?
...string, and os.path is a module. I always structure my packages with empty __init__.py files so that at the same level I always have one type of thing: a module/package or other stuff. Several big Python projects take this approach, which tends to make more structured code.
...
Get users by name property using Firebase
....
In October 2014, Firebase rolled out new querying functionality via the orderByChild() method, that enables you to do this type of query quickly and efficiently. See the updated answer below.
When writing data to Firebase, you have a few different options which will reflect different use case...
Label encoding across multiple columns in scikit-learn
...
You can easily do this though,
df.apply(LabelEncoder().fit_transform)
EDIT2:
In scikit-learn 0.20, the recommended way is
OneHotEncoder().fit_transform(df)
as the OneHotEncoder now supports string input.
Applying OneHotEncoder only to certain columns is possible with the Colum...
How can I alter a primary key constraint using SQL syntax?
...the constraint with an Alter table then recreate it.
ALTER TABLE <Table_Name>
DROP CONSTRAINT <constraint_name>
ALTER TABLE <Table_Name>
ADD CONSTRAINT <constraint_name> PRIMARY KEY (<Column1>,<Column2>)
...
Python, Unicode, and the Windows console
...icode API as the win-unicode-console package mentioned below. print(unicode_string) should just work now.
I get a UnicodeEncodeError: 'charmap' codec can't encode character... error.
The error means that Unicode characters that you are trying to print can't be represented using the current...
Suppress/ print without b' prefix for bytes in Python 3
...
If we take a look at the source for bytes.__repr__, it looks as if the b'' is baked into the method.
The most obvious workaround is to manually slice off the b'' from the resulting repr():
>>> x = b'\x01\x02\x03\x04'
>>> print(repr(x))
b'\x01\x02...
What is the difference between '@' and '=' in directive scope in AngularJS?
...s. For example if the method is hello(name) in parent scope, then in
order to execute the method from inside your directive, you must
call $scope.hello({name:'world'})
I find that it's easier to remember these differences by referring to the scope bindings by a shorter description:
...
Regular Expression: Any character that is NOT a letter or number
... \w is for Word characters and is exactly the same as [a-zA-Z0-9_] (notice that underscore is considered a word character.) ...so the shorthand would be str.replace(/[^\w]/g, ' ')
– Joel Mellon
Aug 30 '13 at 16:41
...
how to “reimport” module to python then code be changed after import
...port sys then reload(sys.modules['foo']) or perhaps reload(sys.modules[bar.__module__])
– drevicko
Oct 28 '13 at 1:02
3
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How to change the Push and Pop animations in a navigation based app
...tions: {
tz.view.frame = f
}, completion: {_ in
transitionContext.completeTransition(true)
})
}
func animatePop(using transitionContext: UIViewControllerContextTransitioning) {
let fz =...