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Proper way to declare custom exceptions in modern Python?
...r(Exception):
def __init__(self, message, errors):
# Call the base class constructor with the parameters it needs
super(ValidationError, self).__init__(message)
# Now for your custom code...
self.errors = errors
That way you could pass dict of error messages t...
What is the most pythonic way to check if an object is a number?
...re multiplying a vector by X. In this case you want to do different things based on what X is. (It might act as something that multiplies, but the result might be nonsensical.)
– Evgeni Sergeev
May 2 '15 at 5:34
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How do I calculate percentiles with python/numpy?
...6, 1.92, 1.98, 2.04, 2.1, 2.16, 2.22, 2.28, 2.34, 2.4, 2.46, 2.52, 2.58, 2.64, 2.7, 2.76, 2.82, 2.88, 2.94, 3.0, 3.06, 3.12, 3.18, 3.24, 3.3, 3.36, 3.42, 3.48, 3.54, 3.6, 3.66, 3.72, 3.78, 3.84, 3.9, 3.96, 4.02, 4.08, 4.14, 4.2, 4.26, 4.32, 4.38, 4.44, 4.5, 4.56, 4.62, 4.68, 4.74, 4.8, 4.86, 4.92, 4...
What is the optimal length for user password salt? [closed]
...nly need to be long enough so that each user's salt will be unique. Random 64-bit salts are very unlikely to ever repeat even with a billion registered users, so this should be fine. A singly repeated salt is a relatively minor security concern, it allows an attacker to search two accounts at once b...
Passing a function with parameters as a parameter?
...;
Or if your callback contains more flexible logic you can pass object.
Demo
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What are some good Python ORM solutions? [closed]
...()
foo_id = Int()
foo = Reference(foo_id, Foo.id)
db = create_database('sqlite:')
store = Store(db)
foo = Foo()
store.add(foo)
thing = Thing()
thing.foo = foo
store.add(thing)
store.commit()
And it makes it painless to drop down into raw SQL when you need to:
store.execute('UPDATE bars ...
Map a network drive to be used by a service
...
Use this at your own risk. (I have tested it on XP and Server 2008 x64 R2)
For this hack you will need SysinternalsSuite by Mark Russinovich:
Step one:
Open an elevated cmd.exe prompt (Run as administrator)
Step two:
Elevate again to root using PSExec.exe:
Navigate to the folder containing...
How to link to part of the same document in Markdown?
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You might give the demo Pandoc tmbundle up on Github a try (there's also emacs pandoc-mode, etc.) The tmbundle re-uses the MultiMarkdown-specific syntax highlighter, so there are a (very) few oddities. Also, a lot of the associated scripts are...
What datatype to use when storing latitude and longitude data in SQL databases? [duplicate]
When storing latitude or longitude data in an ANSI SQL compliant database, what datatype would be most appropriate? Should float be used, or decimal , or ...?
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Call one constructor from another
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@RosdiKasim: The base class constructor always runs first. You cannot use or see this until its base class has been initialized.
– SLaks
Dec 18 '13 at 16:59
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