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__lt__ instead of __cmp__
Python 2.x has two ways to overload comparison operators, __cmp__ or the "rich comparison operators" such as __lt__ . The rich comparison overloads are said to be preferred, but why is this so?
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What is the Python equivalent of Matlab's tic and toc functions?
What is the Python equivalent of Matlab's tic and toc functions ?
12 Answers
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When to use os.name, sys.platform, or platform.system?
As far as I know, Python has 3 ways of finding out what operating system is running on:
5 Answers
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How do you remove duplicates from a list whilst preserving order?
Is there a built-in that removes duplicates from list in Python, whilst preserving order? I know that I can use a set to remove duplicates, but that destroys the original order. I also know that I can roll my own like this:
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month name to month number and vice versa in python
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import calendar
{v: k for k,v in enumerate(calendar.month_abbr)}
Before Python (2.7+) you would do
dict((v,k) for k,v in enumerate(calendar.month_abbr))
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python numpy machine epsilon
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just to be 100% confident, the first one provides python "standard" precision of innate floats while the second one the precision of numpy's floats?
– Charlie Parker
Nov 1 '17 at 16:47
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Iterate a list as pair (current, next) in Python
I sometimes need to iterate a list in Python looking at the "current" element and the "next" element. I have, till now, done so with code like:
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How to make an immutable object in Python?
...ve never needed this, it just struck me that making an immutable object in Python could be slightly tricky. You can't just override __setattr__ , because then you can't even set attributes in the __init__ . Subclassing a tuple is a trick that works:
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Should I use encoding declaration in Python 3?
Python 3 uses UTF-8 encoding for source-code files by default. Should I still use the encoding declaration at the beginning of every source file? Like # -*- coding: utf-8 -*-
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Using %f with strftime() in Python to get microseconds
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Both support %z in Python 3 :-) here's datetime and then time
– adamnfish
Feb 13 '17 at 17:55
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