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defaultdict of defaultdict?
... d[Key_doesnt_exist] will be defaultdict(int).
If you try to access a key from this last defaultdict i.e. d[Key_doesnt_exist][Key_doesnt_exist] it will return 0, which is the return value of the argument of the last defaultdict i.e. int().
...
Using property() on classmethods
...lf - to
extend its __get__ method, or you can
define a descriptor type from scratch
by creating a new-style class that
defines __get__, __set__ and
__delete__ methods.
NOTE: The below method doesn't actually work for setters, only getters.
Therefore, I believe the prescribed solution is...
UIButton inside a view that has a UITapGestureRecognizer
... on its own and prevents the view which has a tabrecognizer attached to it from 'highjacking' the tap. No need to implement a delegate if all you want to do is make a view clickable (to resign first responder / hide the keyboard on textfields etc).. awesome!
– EeKay
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Why is an array not assignable to Iterable?
...h there are a gazillion operations that one would want to use an array for from the start. Oh, that's right, arrays were the only strongly typed collections before generics came along as a sorry hindsight.
– fatuhoku
Nov 28 '11 at 12:02
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What's the difference between unit, functional, acceptance, and integration tests? [closed]
...mething useful. Also, another thing that differentiates integration tests from unit tests is the environment. Integration tests can and will use threads, access the database or do whatever is required to ensure that all of the code and the different environment changes will work correctly.
If y...
What's the best way to store Phone number in Django models
...dling
https://github.com/stefanfoulis/django-phonenumber-field
In model:
from phonenumber_field.modelfields import PhoneNumberField
class Client(models.Model, Importable):
phone = PhoneNumberField(null=False, blank=False, unique=True)
In form:
from phonenumber_field.formfields import Phone...
Difference between SPI and API?
...
From Effective Java, 2nd Edition:
A service provider framework is a
system in which multiple service
providers implement a service, and the
system makes the implementations
available to its clients, decoupling
t...
Sum a list of numbers in Python
...pt the last. Then the averages we want are the averages of each pair taken from the two lists. We use zip to take pairs from two lists.
I assume you want to see decimals in the result, even though your input values are integers. By default, Python does integer division: it discards the remainder. T...
Multiple github accounts on the same computer?
... work on my both my actual "work" repos, and my personal repos on git hub, from my computer.
24 Answers
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Python: How do I make a subclass from a superclass?
In Python, how do you make a subclass from a superclass?
11 Answers
11
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