大约有 6,100 项符合查询结果（耗时：0.0328秒） [XML]
pg_config executable not found
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Have you installed python-dev?
If you already have, try also installing libpq-dev
sudo apt-get install libpq-dev python-dev
From the article: How to install psycopg2 under virtualenv
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Extracting text from HTML file using Python
I'd like to extract the text from an HTML file using Python. I want essentially the same output I would get if I copied the text from a browser and pasted it into notepad.
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Single vs double quotes in JSON
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JSON syntax is not Python syntax. JSON requires double quotes for its strings.
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Unexpected results when working with very big integers on interpreted languages
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Python works:
>>> sum(x for x in xrange(1000000000 + 1))
500000000500000000
Or:
>>> sum(xrange(1000000000+1))
500000000500000000
Python's int auto promotes to a Python long which supports arbitrary pre...
How to calculate cumulative normal distribution?
I am looking for a function in Numpy or Scipy (or any rigorous Python library) that will give me the cumulative normal distribution function in Python.
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How to download image using requests
I'm trying to download and save an image from the web using python's requests module.
14 Answers
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Why doesn't list have safe “get” method like dictionary?
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Python doesn't allow monkeypatching builtin types like list
– Imran
Feb 26 '11 at 7:32
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Split string with multiple delimiters in Python [duplicate]
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Luckily, Python has this built-in :)
import re
re.split('; |, ',str)
Update:Following your comment:
>>> a='Beautiful, is; better*than\nugly'
>>> import re
>>> re.split('; |, |\*|\n',a)
['Beautiful', 'is'...
Creating a dictionary from a csv file?
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mydict = {rows[0]:rows[1] for rows in reader}
Alternately, for python <= 2.7.1, you want:
mydict = dict((rows[0],rows[1]) for rows in reader)
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Why is “import *” bad?
It is recommended to not to use import * in Python.
12 Answers
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