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Understanding dict.copy() - shallow or deep?
...w copy of the dictionary. Same goes for the book I am following (Beazley's Python Reference), which says:
7 Answers
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Format output string, right alignment
...d here's how to do it using the old % syntax (useful for older versions of Python that don't support str.format):
line_new = '%12s %12s %12s' % (word[0], word[1], word[2])
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How to assign text size in sp value using java code
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Cleaner and more reusable approach is
define text size in dimens.xml file inside res/values/ directory:
</resources>
<dimen name="text_medium">14sp</dimen>
</resources>
and then apply it to the TextView:
textView.setTextSize(TypedValue.COMPLEX_UNIT_PX, conte...
How to calculate the sentence similarity using word2vec model of gensim with python
...an you provide a bit of pseudocode on how to do this (I'm not using gensim/python)
– dcsan
Sep 2 '18 at 4:53
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Shared-memory objects in multiprocessing
...es (even over a network).
The Manager approach can be used with arbitrary Python objects, but will be slower than the equivalent using shared memory because the objects need to be serialized/deserialized and sent between processes.
There are a wealth of parallel processing libraries and approaches...
Getting only 1 decimal place [duplicate]
...ing to represent it with only one digit:
print("{:.1f}".format(number)) # Python3
print "%.1f" % number # Python2
or actually round off the other decimal places?
round(number,1)
or even round strictly down?
math.floor(number*10)/10
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Negative list index? [duplicate]
... the end of the list, so n[-1] means the last item in the list n. Any good Python tutorial should have told you this.
It's an unusual convention that only a few other languages besides Python have adopted, but it is extraordinarily useful; in any other language you'll spend a lot of time writing n[...
numpy matrix vector multiplication [duplicate]
...pected, but I simply cannot find any information about how this is done in Python's Numpy module.
1 Answer
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initialize a numpy array
...ly store values, but they need to be have fixed size to obtain this speed. Python lists are designed to be more flexible at the cost of speed and size.
– Justin Peel
Dec 26 '10 at 22:10
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浅析为什么char类型的范围是 -128~+127 - C/C++ - 清泛网 - 专注C/C++及内核技术
...时候把23位取出再加 1便可。
-128也是同样的原理，当数据总线从内存中取出的是1000 000 ，CPU会给它再添最高一位，变为1 1000 0000 这样才能转化为
-128输出，不然1000 0000 如何输出？这当然是我的一种推断，具体怎么实现还得...