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Get the subdomain from a URL
...p-domain-parser
C# / .NET: https://github.com/danesparza/domainname-parser
Python: http://pypi.python.org/pypi/publicsuffix
Ruby: domainatrix, public_suffix
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from list of integers, get number closest to a given value
...o methods and supply both with a sorted myList, these are the results:
$ python -m timeit -s "
from closest import take_closest
from random import randint
a = range(-1000, 1000, 10)" "take_closest(a, randint(-1100, 1100))"
100000 loops, best of 3: 2.22 usec per loop
$ python -m timeit -s "
from ...
pandas three-way joining multiple dataframes on columns
...ber of dataframes you want to merge.
Edit August 1, 2016: For those using Python 3: reduce has been moved into functools. So to use this function, you'll first need to import that module:
from functools import reduce
shar...
Disable IPython Exit Confirmation
...
If you also want Ctrl-D to exit without confirmation, in IPython 0.11, add c.TerminalInteractiveShell.confirm_exit = False to your config file *.
If you don't have a config file yet, run ipython profile create to create one.
Note this ticket if you're working within the Django she...
Numpy where function multiple conditions
...ccepted answer explained the problem well enough. However, the the more Numpythonic approach for applying multiple conditions is to use numpy logical functions. In this ase you can use np.logical_and:
np.where(np.logical_and(np.greater_equal(dists,r),np.greater_equal(dists,r + dr)))
...
Render HTML to an image
...wkhtmltopdf tool)
IMGKit (for ruby and based on wkhtmltoimage)
imgkit (for python and based on wkhtmltoimage)
python-webkit2png
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Pros
Conversion is quite fast most of the time
Cons
Bad rendering
Does not execute javascript
No support for recent web features (FlexBox, Advanced Selectors, W...
Django import error - no module named django.conf.urls.defaults
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patterns has been removed. You can directly use a python list to add urls instead of using patterns.
– Akshay Hazari
Aug 3 '17 at 8:36
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sqlalchemy IS NOT NULL select
...LAlchemy won't emit != NULL however, even if you use column != None on the Python side; you get IS NOT NULL. Using .isnot() lets you force IS NOT on other types however (think .isnot(True) against boolean columns, for example).
– Martijn Pieters♦
Sep 15 '16 a...
How to export plots from matplotlib with transparent background?
... there's this question: And then use the PIL library like in this question Python PIL: how to make area transparent in PNG? so as to make your graph transparent.
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How to determine the longest increasing subsequence using dynamic programming?
...p for me, but it was hard for me to parse what everything was, so I made a Python implementation with overly-descriptive variable names and lots of comments. I did a naive recursive solution, the O(n^2) solution, and the O(n log n) solution.
I hope it helps clear up the algorithms!
The Recursive ...