Fix Python – Creating an empty object in Python
Are there any shortcuts for defining an empty object in Python or do you always have to create an instance of a custom empty class?
Edit: I mean an empty object usable for duck typing.
….
oop
Fix Python – How should I declare default values for instance variables in Python?
Should I give my class members default values like this:
class Foo:
num = 1
or like this?
class Foo:
def __init__(self):
self.num = 1
In this question I discovered that in both cases,
bar = Foo()
bar.num += 1
is a well-defined operation.
I understand that the first method will give me a class variable while the second one will n….
Fix Python – What is the advantage of using static methods?
I ran into unbound method error in python with the code
import random
class Sample(object):
”’This class defines various methods related to the sample”’
def drawSample(samplesize,List):
sample=random.sample(List,samplesize)
return sample
Choices=range(100)
print Sample.drawSample(5,Choices)
After reading many helpful ….
Fix Python – Plotting with seaborn using the matplotlib object-oriented interface
I strongly prefer using matplotlib in OOP style:
f, axarr = plt.subplots(2, sharex=True)
axarr[0].plot(…)
axarr[1].plot(…)
This makes it easier to keep track of multiple figures and subplots.
Question: How to use seaborn this way? Or, how to change this example to OOP style? How to tell seaborn plotting functions like lmplot which Figure or A….
Fix Python – Should I use a class or dictionary?
I have a class that contains only fields and no methods, like this:
class Request(object):
def __init__(self, environ):
self.environ = environ
self.request_method = environ.get(‘REQUEST_METHOD’, None)
self.url_scheme = environ.get(‘wsgi.url_scheme’, None)
self.request_uri = wsgiref.util.request_uri(environ)
….
Fix Python – Difference between Encapsulation and Abstraction
I had an interview today. I had a question from OOP, about the difference between Encapsulation & Abstraction?
I replied to my knowledge that Encapsulation is basically binding data members & member functions into a single unit called Class. Whereas Abstraction is basically to hide implementation complexity & provide ease of access to the users. I….
Fix Python – Should __init__() call the parent class’s __init__()?
I’m used that in Objective-C I’ve got this construct:
– (void)init {
if (self = [super init]) {
// init class
}
return self;
}
Should Python also call the parent class’s implementation for __init__?
class NewClass(SomeOtherClass):
def __init__(self):
SomeOtherClass.__init__(self)
# init class
Is this also ….
Fix Python – How do I design a class in Python?
I’ve had some really awesome help on my previous questions for detecting paws and toes within a paw, but all these solutions only work for one measurement at a time.
Now I have data that consists off:
about 30 dogs;
each has 24 measurements (divided into several subgroups);
each measurement has at least 4 contacts (one for each paw) and
each….
Fix Python – How do I initialize the base (super) class?
In Python, consider I have the following code:
class SuperClass(object):
def __init__(self, x):
self.x = x
class SubClass(SuperClass):
def __init__(self, y):
self.y = y
# how do I initialize the SuperClass __init__ here?
How do I initialize the SuperClass __init__ in the subclass? I am following the Python….
Fix Python – List all base classes in a hierarchy of given class?
Given a class Foo (whether it is a new-style class or not), how do you generate all the base classes – anywhere in the inheritance hierarchy – it issubclass of?
….