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ImportError in importing from sklearn: cannot import name check_build
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Worked for me after installing scipy.
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open read and close a file in 1 line of code
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You don't really have to close it - Python will do it automatically either during garbage collection or at program exit. But as @delnan noted, it's better practice to explicitly close it for various reasons.
So, what you can do to keep ...
Simplest/Cleanest way to implement singleton in JavaScript?
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return { // public interface
publicMethod1: function () {
// all private members are accessible here
},
publicMethod2: function () {
}
};
})();
This has been called the module pattern, it basically allows you to encapsulate private members on an object, by taking advant...
Android: alternate layout xml for landscape mode
...can I have one layout for landscape and one for portrait? I want to assume extra width and conserve vertical space when the user rotates the phone over sideways.
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What is the difference between '/' and '//' when used for division?
...floating point division, and the latter is floor division, sometimes also called integer division.
In Python 2.2 or later in the 2.x line, there is no difference for integers unless you perform a from __future__ import division, which causes Python 2.x to adopt the 3.x behavior.
Regardless of the ...
Which is better in python, del or delattr?
... (foo)
6 LOAD_CONST 1 ('bar')
9 CALL_FUNCTION 2
12 POP_TOP
This translates into the first running slightly faster (but it's not a huge difference – .15 μs on my machine).
Like the others have said, you should really...
How do I get the opposite (negation) of a Boolean in Python?
...ful if you want to use a function that requires a predicate-function or a callback.
For example map or filter:
>>> lst = [True, False, True, False]
>>> list(map(operator.not_, lst))
[False, True, False, True]
>>> lst = [True, False, True, False]
>>> list(filter...
Difference between os.getenv and os.environ.get
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@PreslavRachev minimal or not it is an extra function call, so there is some overhead. That being said, you probably don't need to retrieve env variables in the middle of your inner loop.
– pmav99
Feb 24 '19 at 14:08
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How to use SCNetworkReachability in Swift
...address", or use SCNetworkReachabilityCreateWithName() with a host name as string. But note that SCNetworkReachability only checks that a packet sent to that address can leave the local device. It does not guarantee that the data packet will actually be received by the host.
– ...
iOS: Compare two dates
... I've found problems using compare & isEqualToDate. Sure, it may be an extra 2 lines of code, but it's more reliable.
– Coach Roebuck
Jul 25 '15 at 17:04
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