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Unique fields that allow nulls in Django
...trings are equal to empty strings for uniqueness checks, under both Django and database rules.
You can force the admin interface to store NULL for an empty string by providing your own customized model form for Foo with a clean_bar method that turns the empty string into None:
class FooForm(forms....
How to find the mysql data directory from command line in windows
In linux I could find the mysql installation directory with the command which mysql . But I could not find any in windows. I tried echo %path% and it resulted many paths along with path to mysql bin.
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Python matplotlib multiple bars
...lotlib, when I tried to call the bar function multiple times, they overlap and as seen the below figure the highest value red can be seen only.
How can I plot the multiple bars with dates on the x-axes?
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How to prevent IFRAME from redirecting top-level window
...ozilla.org/en-US/docs/Web/API/Window.onbeforeunload
In HTML5 you can use sandbox property. Please see Pankrat's answer below.
http://www.html5rocks.com/en/tutorials/security/sandboxed-iframes/
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django : using select_related and get_object_or_404 together
Is there any way of using get_object_or_404 and select_related together or any other way to achieve the result of using these two together(except from putting it in try/except)??
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How to print third column to last column?
...simpler solution: cut -f 3- INPUTFILE just add the correct delimiter (-d) and you got the same effect.
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Why does calling a function in the Node.js REPL with )( work?
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They actually went ahead and fixed it? Awwww, pity, I'd really like to see it start a culture and become a feature in all languages. How many times have I typed )( instead of () in a hurry... :))
– geomagas
Oct ...
Find the files existing in one directory but not in the other [closed]
...es existing in one directory but not in the other, I tried to use this command:
14 Answers
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How do I get a raw, compiled SQL query from a SQLAlchemy expression?
I have a SQLAlchemy query object and want to get the text of the compiled SQL statement, with all its parameters bound (e.g. no %s or other variables waiting to be bound by the statement compiler or MySQLdb dialect engine, etc).
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Get object by id()? [duplicate]
...The Python weakref module lets you keep references, dictionary references, and proxies to objects without having those references count in the reference counter. They're like symbolic links.
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