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XMLHttpRequest Origin null is not allowed Access-Control-Allow-Origin for file:/// to file:/// (Serv
...n be as trivial as cding into the directory the files are in and running:
python -m SimpleHTTPServer
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Why is early return slower than else?
...88136 which reduced modulo 32 is 8 so there's a collision. To resolve this Python calculates:
Starting with:
j = hash % 32
perturb = hash
Repeat this until we find a free slot:
j = (5*j) + 1 + perturb;
perturb >>= 5;
use j % 2**i as the next table index;
which gives it 17 to use as the ...
correct way to use super (argument passing)
So I was following Python's Super Considered Harmful , and went to test out his examples.
3 Answers
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How to print the full traceback without halting the program?
...t_exc, in some corner cases, you will not obtain what you would expect. In Python 2.x:
import traceback
try:
raise TypeError("Oups!")
except Exception, err:
try:
raise TypeError("Again !?!")
except:
pass
traceback.print_exc()
...will display the traceback of the ...
Method Resolution Order (MRO) in new-style classes?
In the book Python in a Nutshell (2nd Edition) there is an example which uses
old style classes to demonstrate how methods are resolved in classic resolution order and
how is it different with the new order.
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How to access a dictionary element in a Django template?
...thanks @john ewart, your solution worked for me. I am newbie to django and python and can't figureout how to get the sql that ORM generated.
– Mohamed
Aug 14 '09 at 8:27
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django MultiValueDictKeyError error, how do I deal with it
...dded to that is the slow-down. I don't know the details of how it works in Python, but I would imagine an expensive stack-trace would be involved.
– Joe
May 5 '11 at 9:53
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Make virtualenv inherit specific packages from your global site-packages
...tualenv which will contain just some libraries (which i chose) of the base python installation.
4 Answers
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Matplotlib: “Unknown projection '3d'” error
...current version of matplotlib.
Which version are you using? (Try running: python -c 'import matplotlib; print matplotlib."__version__")
I'm guessing you're running version 0.99, in which case you'll need to either use a slightly different syntax or update to a more recent version of matplotlib.
I...
What is the difference between application server and web server?
...
Web server
Run python -m 'SimpleHTTPServer' and go to http://localhost:8080. What you see is a web server at its workings. The server simply serves files over HTTP stored on your computer. The key point is that all this is done on top of th...