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Creating a singleton in Python
...t is most pythonic. In this instance I define 'most pythonic' to mean that it follows the 'principle of least astonishment' .
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Design patterns or best practices for shell scripts [closed]
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I wrote quite complex shell scripts and my first suggestion is "don't". The reason is that is fairly easy to make a small mistake that hinders your script, or even make it dangerous.
That said, I don't have other resources to pass you...
How to get the parent dir location
...follow
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edited Feb 1 '14 at 1:11
answered May 12 '10 at 9:03
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How to get the input from the Tkinter Text Widget?
.... If we have a text box myText_Box, then this is the method for retrieving its input.
def retrieve_input():
input = self.myText_Box.get("1.0",END)
The first part, "1.0" means that the input should be read from line one, character zero (ie: the very first character). END is an imported constan...
What is the purpose of python's inner classes?
.../nested classes confuse me. Is there something that can't be accomplished without them? If so, what is that thing?
9 Answer...
TypeError: method() takes 1 positional argument but 2 were given
...bject, "foo")
...which, as you can see, does indeed have two arguments - it's just that the first one is implicit, from the point of view of the caller.
This is because most methods do some work with the object they're called on, so there needs to be some way for that object to be referred to ins...
How do you generate dynamic (parameterized) unit tests in python?
I have some kind of test data and want to create a unit test for each item. My first idea was to do it like this:
25 Answer...
List directory tree structure in python?
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Here's a function to do that with formatting:
import os
def list_files(startpath):
for root, dirs, files in os.walk(startpath):
level = root.replace(startpath, '').count(os.sep)
indent = ' ' * 4 * (level)
print('{}{}/'.format...
Inheritance and Overriding __init__ in python
I was reading 'Dive Into Python' and in the chapter on classes it gives this example:
5 Answers
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Underscore vs Double underscore with variables and methods [duplicate]
... E.g.
from M import *
does not import objects whose name starts with an underscore.
single_trailing_underscore_: used by convention to avoid conflicts with Python keyword, e.g.
Tkinter.Toplevel(master, class_='ClassName')
__double_leading_underscore: when naming a class attribute,...