For C++, we can use OpenMP to do parallel programming; however, OpenMP will not work for Python. What should I do if I want to parallel some parts of my python program? ...

... use an an already constructed dict without a single item as **kwargs, some_function(**{k:v for k,v in some_dict.items() if k not 'some_key'}) – Cole Nov 19 '17 at 21:14 ...

...will recursively count the array. This is particularly useful for counting all the elements of a multidimensional array. count() does not detect infinite recursion. However this method does not detect array(array()). share...

...ethod into a function by applying the underscore scala> val f = times2 _ f: Int => Int = <function1> scala> f(4) res0: Int = 8 Note the fundamental difference between methods and functions. res0 is an instance (i.e. it is a value) of the (function) type (Int => Int) Functors ...

...the one you posted: Exception in thread Thread-2: Traceback (most recent call last): File "/usr/lib/python2.7/threading.py", line 552, in __bootstrap_inner self.run() File "/usr/lib/python2.7/threading.py", line 505, in run self.__target(*self.__args, **self.__kwargs) File "/usr/lib/p...

I was having a discussion with a teammate about locking in .NET. He's a really bright guy with an extensive background in both lower-level and higher-level programming, but his experience with lower level programming far exceeds mine. Anyway, He argued that .NET locking should be avoided on critic...

...like a bug to me. I created an issue. But a groupby operation doesn't actually return a DataFrame sorted by group. The .head() method is a little misleading here -- it's just a convenience feature to let you re-examine the object (in this case, df) that you grouped. The result of groupby is separat...

...wesome. Algebraic data types in a nutshell ML-like functional languages allow you define simple data types called "disjoint unions" or "algebraic data types". These data structures are simple containers, and can be recursively defined. For example: type 'a list = | Nil | Cons of 'a * 'a ...

... of it) for the first time, the code inside the module is executed sequentially like any other code; e.g., it is not treated any differently that the body of a function. An import is just a command like any other (assignment, a function call, def, class). Assuming your imports occur at the top of th...

... This actually removes the contents from the list, but doesn't replace the old label with a new empty list: del lst[:] Here's an example: lst1 = [1, 2, 3] lst2 = lst1 del lst1[:] print(lst2) For the sake of completeness, the slic...