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How to find list intersection?
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this seems the most pythonic which keeps order. not sure why this isn't upvoted higher!! thx for the great solution!
– Bill D
Mar 1 '18 at 6:15
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How to run Visual Studio post-build events for debug build only
...onName)"=="My Debug CFG" ( xcopy "$(TargetDir)test1.tmp" "$(TargetDir)test.xml" /y) else ( xcopy "$(TargetDir)test2.tmp" "$(TargetDir)test.xml" /y)
No error 255 here.
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Automatically remove Subversion unversioned files
...on to do this:
svn cleanup --remove-unversioned
Before that, I use this python script to do that:
import os
import re
def removeall(path):
if not os.path.isdir(path):
os.remove(path)
return
files=os.listdir(path)
for x in files:
fullpath=os.path.join(path, x)...
Renaming a virtualenv folder without breaking it
...e scripts to use
activate_this.py instead of using the
location of the Python interpreter to
select the environment.
Note: you must run this after you've
installed any packages into the
environment. If you make an
environment relocatable, then install
a new package, you must run v...
How do I resize an image using PIL and maintain its aspect ratio?
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The Python 3 documentation for PIL says that thumbnail only works if the resulting image is smaller than the original one. Because of that I would guess that using resize is the better way.
– So S
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Rails detect if request was AJAX
...equest.xhr?
Returns true if the “X-Requested-With” header contains “XMLHttpRequest”....
But BEWARE that
request.xhr?
returns numeric or nil values not BOOLEAN values as the docs say, in accordance with =~.
irb(main):004:0> /hay/ =~ 'haystack'
=> 0
irb(main):006:0> /stack/ =...
Rotating a two-dimensional array in Python
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That's a clever bit.
First, as noted in a comment, in Python 3 zip() returns an iterator, so you need to enclose the whole thing in list() to get an actual list back out, so as of 2020 it's actually:
list(zip(*original[::-1]))
Here's the breakdown:
[::-1] - makes a shallow co...
Explicitly select items from a list or tuple
I have the following Python list (can also be a tuple):
8 Answers
8
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Python string.replace regular expression [duplicate]
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Not the answer you're looking for? Browse other questions tagged python regex replace or ask your own question.
Python + Django page redirect
...thod as of Django 1.0. See this answer: stackoverflow.com/questions/523356/python-django-page-redirect/…
– Jake
Dec 16 '10 at 0:40
2
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