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Get object by id()? [duplicate]
Let's say I have an id of a Python object, which I retrieved by doing id(thing) . How do I find thing again by the id number I was given?
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Trying to mock datetime.date.today(), but not working
...attributes of built-in/extension type 'datetime.date'
This fails because Python built-in types are immutable - see this answer for more details.
In this case, I would subclass datetime.date myself and create the right function:
import datetime
class NewDate(datetime.date):
@classmethod
d...
Extract first item of each sublist
...[1,2,3],[11,12,13],[21,22,23]]
>>> zip(*lst)[0]
(1, 11, 21)
Or, Python 3 where zip does not produce a list:
>>> list(zip(*lst))[0]
(1, 11, 21)
Or,
>>> next(zip(*lst))
(1, 11, 21)
Or, (my favorite) use numpy:
>>> import numpy as np
>>> a=np.array...
How to convert a SVG to a PNG with ImageMagick?
...s from ImageMagick in this instance, but Inkscape does a nice job of it on Linux and Windows:
inkscape -z -w 1024 -h 1024 input.svg -e output.png
Edit (May 2020): Inkscape 1.0 users, please note that the command line arguments have changed:
inkscape -w 1024 -h 1024 input.svg --export-filename outpu...
How to delete last item in list?
...d. (as stated by @pltrdy in the comments)
Note 2: The code could use some Python idioms. I highly recommend reading this:
Code Like a Pythonista: Idiomatic Python (via wayback machine archive).
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How to find the JVM version from a program?
...LEASE//plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -os linux -ws gtk -arch x86_64 -showsplash -launcher /home/.../STS IDE/sts-bundle/sts-3.7.2.RELEASE/STS -name STS --launcher.library /home/.../STS IDE/sts-bundle/sts-3.7.2.RELEASE//plugins/org.eclipse.equinox.launcher.gtk.linux.x...
OOP vs Functional Programming vs Procedural [closed]
...y better off with that. For a small web application, there are some great Python, PHP, and Ruby frameworks that'll get you off and running very quickly. Java is a great choice for larger projects because of the compile-time checking and enterprise libraries and platforms.
It used to be the case t...
Does Go have “if x in” construct similar to Python?
... (probably about as slow as if you wrote it out in a dynamic language like Python). Other than that, no. That's what people mean when they say that Go doesn't have generics.
– andybalholm
May 13 '15 at 15:44
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efficient circular buffer?
I want to create an efficient circular buffer in python (with the goal of taking averages of the integer values in the buffer).
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GPL and LGPL open source licensing restrictions [closed]
...to the software.
The question of usage is a little more complicated. GNU/Linux is released under the GPL. Nothing forbids you to write software that runs under Linux regardless of the licence of your software. However, you cannot distribute Linux together with your software. That is often a proble...