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Difference between __getattr__ vs __getattribute__
...ily.
New-style classes derive from object, old-style classes are those in Python 2.x with no explicit base class. But the distinction between old-style and new-style classes is not the important one when choosing between __getattr__ and __getattribute__.
You almost certainly want __getattr__.
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What's the difference between dist-packages and site-packages?
I'm a bit miffed by the python package installation process. Specifically, what's the difference between packages installed in the dist-packages directory and the site-packages directory?
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Is it Pythonic to use list comprehensions for just side effects?
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It is very anti-Pythonic to do so, and any seasoned Pythonista will give you hell over it. The intermediate list is thrown away after it is created, and it could potentially be very, very large, and therefore expensive to create.
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Recursive sub folder search and return files in a list python
...able(glob(os.path.join(x[0], '*.txt')) for x in os.walk('.')))
Edit2 for Python 3.4+
from pathlib import Path
result = list(Path(".").rglob("*.[tT][xX][tT]"))
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How to override the [] operator in Python?
...e method to override the [] operator (subscript notation) for a class in Python?
3 Answers
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JavaScript variable assignments from tuples
In other languages like Python 2 and Python 3, you can define and assign values to a tuple variable, and retrieve their values like this:
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python max function using 'key' and lambda expression
I come from OOP background and trying to learn python.
I am using the max function which uses a lambda expression to return the instance of type Player having maximum totalScore among the list players .
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open() in Python does not create a file if it doesn't exist
...the file does not exist, it creates a new file for
reading and writing. -Python file modes
seek() method sets the file's current position.
f.seek(pos [, (0|1|2)])
pos .. position of the r/w pointer
[] .. optionally
() .. one of ->
0 .. absolute position
1 .. relative position to current
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How to set up a PostgreSQL database in Django
I'm new to Python and Django.
11 Answers
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How to un-escape a backslash-escaped string?
...s a backslash-escaped version of another string. Is there an easy way, in Python, to unescape the string? I could, for example, do:
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