大约有 9,000 项符合查询结果(耗时:0.0264秒) [XML]

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Python Sets vs Lists

In Python, which data structure is more efficient/speedy? Assuming that order is not important to me and I would be checking for duplicates anyway, is a Python set slower than a Python list? ...
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How can I selectively escape percent (%) in Python strings?

... In Python 3.3.5, print('%s%%' % 100) prints 100%. But print('%%') prints %%. So it looks like you don't have to escape the % signs if you don't make substitutions. – Zenadix Sep 8 '15 at 19...
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Why wasn't PyPy included in standard Python?

...yPy and I was just wondering why it hasn't been adopted into the mainline Python distributions. Wouldn't things like JIT compilation and lower memory footprint greatly improve the speeds of all Python code? ...
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In Python, how can you load YAML mappings as OrderedDicts?

... to get PyYAML 's loader to load mappings (and ordered mappings) into the Python 2.7+ OrderedDict type, instead of the vanilla dict and the list of pairs it currently uses. ...
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Converting Dictionary to List? [duplicate]

I'm trying to convert a Python dictionary into a Python list, in order to perform some calculations. 7 Answers ...
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Web-scraping JavaScript page with Python

... isn't maintained anymore and the library dryscape developers recommend is Python 2 only. I have found using Selenium's python library with Phantom JS as a web driver fast enough and easy to get the work done. Once you have installed Phantom JS, make sure the phantomjs binary is available in the cu...
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mkdir -p functionality in Python [duplicate]

... a way to get functionality similar to mkdir -p on the shell from within Python. I am looking for a solution other than a system call. I am sure the code is less than 20 lines, and I am wondering if someone has already written it? ...
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How to reset db in Django? I get a command 'reset' not found error

... reset has been replaced by flush with Django 1.5, see: python manage.py help flush share | improve this answer | follow | ...
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How to reliably open a file in the same directory as a Python script

...sed to open files that were in the same directory as the currently running Python script by simply using a command like 5 ...
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Why aren't superclass __init__ methods automatically invoked?

Why did the Python designers decide that subclasses' __init__() methods don't automatically call the __init__() methods of their superclasses, as in some other languages? Is the Pythonic and recommended idiom really like the following? ...