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Abstract methods in Python [duplicate]
...what a metaclass is, don't worry about it. :-)
– kindall
Dec 8 '10 at 0:15
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The linked tutorial ...
How to list all installed packages and their versions in Python?
Is there a way in Python to list all installed packages and their versions?
11 Answers
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How can I implement a tree in Python?
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I came across this answer via Google. This library is really nice. I especially love the ability to use the mixin class to make an tree of any object!
– Rÿck Nöthing
Mar 8 '19 at 1:21
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Get a filtered list of files in a directory
...t a list of files in a directory using Python, but I do not want a list of ALL the files.
14 Answers
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Python __str__ versus __unicode__
...onfusing, but in 2.x we're stuck with them for compatibility reasons. Generally, you should put all your string formatting in __unicode__(), and create a stub __str__() method:
def __str__(self):
return unicode(self).encode('utf-8')
In 3.0, str contains characters, so the same methods are nam...
Omitting all xsi and xsd namespaces when serializing an object in .NET?
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Also, this doesn't remove all xml namespaces, as the question asked. It removes only the xsi and xsd namespaces, as mentioned in the question stackoverflow.com/questions/258960, which is also cited in this question.
– Cheeso
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Principal component analysis in Python
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Months later, here's a small class PCA, and a picture:
#!/usr/bin/env python
""" a small class for Principal Component Analysis
Usage:
p = PCA( A, fraction=0.90 )
In:
A: an array of e.g. 1000 observations x 20 variables, 1000 rows x 20 colum...
How do I import other TypeScript files?
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You can use the --all flag with tsc on your main .ts file. The compiler figures out all the dependencies based on your reference tags and generates a single output .js file for the entire application: tsc --out app.js main.ts
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Best way to allow plugins for a PHP application
... 5 = 9
4 * 5 = 20
Notes:
For this example source code, you must declare all your plugins before the actual source code that you want to be extendable. I've included an example of how to handle single or multiple values being passed to the plugin. The hardest part of this is writing the actual d...
Replace all non Alpha Numeric characters, New Lines, and multiple White Space with one Space
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I marked this answer correct after all these years, because i looked back and the accepted didn't exclude underscores
– Michael Randall
Apr 12 '18 at 11:23
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