I want a dictionary of files: files = [files for (subdir, dirs, files) i开发者_如何学Pythonn os.walk(rootdir)]
I have a list of strings parsed from somewhere, in the following format: [key1, value1, key2, value2,开发者_如何学Python key3, value3, ...]
Suppose I have the following object: class Foo(object): def __init__(self, name=None): self.name = name def __repr__(self):
I\'m trying to learn Scala and tried to write a sequence comprehension that extracts unigrams, bigrams and trigrams from a sequence. E.g., [1,2,3,4] should be transformed to (not Scala syntax)
Here is a code snippet that shows the code I would like to optimize: result = [(item, foo(item)) for item in item_list
I just learned about list comprehension, which is a great fast way to get data in a single line of code. But something\'s bugging me.
Which of the following are you most likely to write? r = zip xs $ map sqrt xs or r = [(x, sqrt x) | x <- xs]
given: template = {\'a\': \'b\', \'c\': \'d\'} add = [\'e\', \'f\'] k = \'z\' I want to use list comprehension to generate
I have a dictionary, with 300 key value pairs, where each开发者_开发知识库 of the keys are integers and the values are dictionaries with three key value pairs. The inner dictionaries all have the same
Given two vectors X and Y, I have to find their correlation, i.e. their linear dependence/independence.Both vectors have equal dimension.The result should be a floating point number from [-1.0 .. 1.0]
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