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Is there shorthand for returning a default value if None in Python? [duplicate]
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Its Pythonic #PEP20 The Zen of Python Explicit is better than implicit. Better to handle only for None Cases if thats what it takes.
– Doogle
Jan 19 '18 at 4:53
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Using property() on classmethods
... class foo(object):
... _var = 5
... class __metaclass__(type): # Python 2 syntax for metaclasses
... pass
... @classmethod
... def getvar(cls):
... return cls._var
... @classmethod
... def setvar(cls, value):
... cls._var = value
...
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What are “first class” objects?
...lasses are not first class objects but instances of those classes are. In Python both the classes and the objects are first class objects. (See this answer for more details about classes as objects).
Here is an example of Javascript first class functions:
// f: function that takes a number and r...
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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Accessing elements of Python dictionary by index
...bout the order, then you might consider using an OrderedDict:
http://docs.python.org/dev/library/collections.html#collections.OrderedDict
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Test if a variable is a list or tuple
In python, what's the best way to test if a variable contains a list or a tuple? (ie. a collection)
13 Answers
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Convert Year/Month/Day to Day of Year in Python
I'm using the Python datetime module, i.e.:
7 Answers
7
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What is Python used for? [closed]
What is Python used for and what is it designed for?
2 Answers
2
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Unexpected results when working with very big integers on interpreted languages
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Python works:
>>> sum(x for x in xrange(1000000000 + 1))
500000000500000000
Or:
>>> sum(xrange(1000000000+1))
500000000500000000
Python's int auto promotes to a Python long which supports arbitrary pre...
Django - “no module named django.core.management”
...ango installed. You should check the directory produced by this command:
python -c "from distutils.sysconfig import get_python_lib; print get_python_lib()"
To see if you have the django packages in there.
If there's no django folder inside of site-packages, then you do not have django installe...