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What are the differences between numpy arrays and matrices? Which one should I use?

...ted/numpy.matrix.html As other answers already state that you can achieve all the operations with NumPy arrays. share | improve this answer | follow | ...
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Javascript equivalent of Python's zip function

..., unlike Python's version where the argument list is variadic. If you want all of these "features", see below. It takes just about 2 extra lines of code. The following will mimic Python's zip behavior on edge cases where the arrays are not of equal size, silently pretending the longer parts of arra...
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How to color System.out.println output? [duplicate]

...minals simply won't support some (if any) ANSI escape sequences and, especially, 24-bit colors. Usage Please refer to the section Curses at the bottom for the best solution. For a personal or easy solution (although not as cross-platform solution), refer to the ANSI Escape Sequences section. TL...
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Encoding an image file with base64

... here is an update after you have edited your original question. First of all, remember to use raw strings (prefix the string with 'r') when using path delimiters on Windows, to prevent accidentally hitting an escape character. Second, PIL's Image.open either accepts a filename, or a file-like (tha...
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How do JavaScript closures work?

...clared outside the function, regardless of when and where the function is called. If a function was called by a function, which in turn was called by another function, then a chain of references to outer lexical environments is created. This chain is called the scope chain. In the following code, in...
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How to call Base Class's __init__ method from the child class? [duplicate]

... If you pass BaseClass to super, it'll skip over BaseClass and call object.__init__, which is almost certainly not what you want. – abarnert Oct 6 '13 at 7:29 1 ...
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What's the algorithm to calculate aspect ratio?

...re that's been changed from 16:9 to 5:4 - I still remember the incredibly tall, thin cowboys I used to watch in my youth on television before letter-boxing was introduced. You may be better off having one different image per aspect ratio and just resize the correct one for the actual screen dimensio...
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Deep copy of a dict in python

... @BuvinJ The issue is that json.loads doesn't solve the problem for all use cases where python dict attributes are not JSON serializable. It may help those who are only dealing with simple data structures, from an API for example, but I don't think it's enough of a solution to fully answer th...
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How can I get the concatenation of two lists in Python without modifying either one? [duplicate]

... Actually you can do this by using the a non hidden function: import operator, operator.add(list1, list2) – e-satis Apr 13 '11 at 12:28 ...
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Realistic usage of the C99 'restrict' keyword?

...aw it mentioned. I read a brief description, stating that it would be basically a promise from the programmer that the pointer won't be used to point somewhere else. ...