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How do I get the opposite (negation) of a Boolean in Python?
...> value = False
>>> not value
True
So instead of your code:
if bool == True:
return False
else:
return True
You could use:
return not bool
The logical negation as function
There are also two functions in the operator module operator.not_ and it's alias operator.__not__ i...
Python multiprocessing pool.map for multiple arguments
...ort product
def merge_names(a, b):
return '{} & {}'.format(a, b)
if __name__ == '__main__':
names = ['Brown', 'Wilson', 'Bartlett', 'Rivera', 'Molloy', 'Opie']
with multiprocessing.Pool(processes=3) as pool:
results = pool.starmap(merge_names, product(names, repeat=2))
...
Generating a random password in php
...
RandomLib has not been updated for over two years now. Using it on a recent PHP build (7.1.25 in my case) throws deprecation warnings for various mcrypt_* functions. I can see on an issue thread that you have forked the library due not being able to get a hold of @ircmaxell,...
Python glob multiple filetypes
... a list of multiple file types such as .txt, .mdown, and .markdown? Right now I have something like this:
32 Answers
...
Difference between applicationContext.xml and spring-servlet.xml in Spring Framework
...antiation order is: the root (application context), then FrameworkServlet.
Now it should be clear why they are important in which scenario.
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How do I get a PHP class constructor to call its parent's parent's constructor?
... __construct($bypass = false)
{
// only perform actions inside if not bypassing
if (!$bypass) {
}
// call Grandpa's constructor
parent::__construct();
}
}
class Kiddo extends Papa
{
public function __construct()
{
$bypassPapa = true;
...
MongoDB not equal to
...8b1a7768972d396fe2268"), "author" : "you", "post" : "how to query" }
And now $not, which takes in predicate ($ne) and negates it ($not):
db.test.find({'post': {$not: {$ne : ""}}})
{ "_id" : ObjectId("4f68b19c768972d396fe2267"), "author" : "me", "post" : "" }
...
Get all object attributes in Python? [duplicate]
...r__, may be RPC proxy objects, or may be instances of C-extension classes. If your object is one these examples, they may not have a __dict__ or be able to provide a comprehensive list of attributes via __dir__: many of these objects may have so many dynamic attrs it doesn't won't actually know what...
Compare two DataFrames and output their differences side-by-side
...
df_final = df_all.swaplevel(axis='columns')[df.columns[1:]]
df_final
Now, its much easier to spot the differences in the frames. But, we can go further and use the style property to highlight the cells that are different. We define a custom function to do this which you can see in this part of...
How to sort a list of objects based on an attribute of the objects?
...
No problem. btw, if muhuk is right and it's a list of Django objects, you should consider his solution. However, for the general case of sorting objects, my solution is probably best practice.
– Triptych
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