大约有 9,000 项符合查询结果(耗时:0.0272秒) [XML]

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Project structure for Google App Engine

...lt to keep things organized - mainly due to the fact that this is my first python project, and I didn't know anything about it until I started working. ...
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How to split a column into two columns?

...rst two parameters of .str.split() do, I recommend the docs for the plain Python version of the method. But how do you go from: a column containing two-element lists to: two columns, each containing the respective element of the lists? Well, we need to take a closer look at the .str attrib...
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Use cases for the 'setdefault' dict method

The addition of collections.defaultdict in Python 2.5 greatly reduced the need for dict 's setdefault method. This question is for our collective education: ...
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Non-alphanumeric list order from os.listdir()

I often use python to process directories of data. Recently, I have noticed that the default order of the lists has changed to something almost nonsensical. For example, if I am in a current directory containing the following subdirectories: run01, run02, ... run19, run20, and then I generate a list...
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“x not in y” or “not x in y”

... You've run into a CPython peephole optimisation; a compile-time optimisation that other Python implementations such as Jython and IronPython are free to ignore or copy (it is not part of the language specification). – Mart...
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Failed loading english.pickle with nltk.data.load

... I had this same problem. Go into a python shell and type: >>> import nltk >>> nltk.download() Then an installation window appears. Go to the 'Models' tab and select 'punkt' from under the 'Identifier' column. Then click Download and it wil...
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How to stop flask application without using ctrl-c

...API, I am curious about how to code this. I am working on Ubuntu 12.10 and Python 2.7.3. 13 Answers ...
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Argparse optional positional arguments?

... @dolan: Yes, + works, too. See docs.python.org/2/library/argparse.html#nargs for the details. – Vinay Sajip Jan 8 '13 at 23:53 2 ...
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Is there a way to provide named parameters in a function call in JavaScript?

... belt. One of my favorite languages that I have had the pleasure to use is Python. Python supports named parameters without any trickery.... Since I started using Python (some time ago) everything became easier. I believe that every language should support named parameters, but that just isn't the c...
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“for loop” with two variables? [duplicate]

... And who doesn't love going through indenting everything to make python happy? – mohbandy Sep 20 '16 at 20:06 3 ...