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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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When to use Amazon Cloudfront or S3
...Service, this can be used large amount of information i.e. Videos, Images, PDF etc.
CloudFront is a Content Delivery Network, which is closer to the end user and is used to make the information available on Amazon S3 in the least possible time.
A sample use case is Video on Demand.
You stores yo...
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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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 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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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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Why are variables “i” and “j” used for counters?
...ere is a nice reference physics.ucsb.edu/~physCS31/fall2010/index-notation.pdf
– John Hartsock
Nov 18 '10 at 2:49
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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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How to pick just one item from a generator?
...funct()
Everytime you would like an item, use
next(g)
(or g.next() in Python 2.5 or below).
If the generator exits, it will raise StopIteration. You can either catch this exception if necessary, or use the default argument to next():
next(g, default_value)
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Python: Bind an Unbound Method?
In Python, is there a way to bind an unbound method without calling it?
5 Answers
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