Questions tagged [python-object]
102 questions
1
vote
2 answers
Pythonic way to get either one of two attributes from a Python object
I want to get either one of two attributes from a Python object. If neither of those attributes is present, I want to get a default value.
For instance, I want to get either the number of apples or of oranges in a FruitBasket,
and if neither is…
Enrico Gandini
- 855
- 5
- 29
1
vote
0 answers
Assigning starting player and switching between them
I am trying to assign a starting player as the "first" CurrentPlayer, and then assign player 2 as CurrentPlayer once player 1 has finished the turn. Somehow, I cant get it to work at all.
""" This is the model of the game"""
class Game:
…
Andreas Philipson
- 11
- 1
1
vote
1 answer
How to find out what `*` operator do on two objects from some library (cirq)?
I just started using python cirq library and I came across the following line of code in the tutorial:
XX_obs = cirq.X(q0) * cirq.X(q1)
I just want to find in the code what this * operator do on this two specific cirq objects. How to do so?
Fallen Apart
- 723
- 8
- 20
1
vote
2 answers
How is this Python design pattern called?
In the ffmpeg-python docs, they used following design pattern for their examples:
(
ffmpeg
.input('dummy.mp4')
.filter('fps', fps=25, round='up')
.output('dummy2.mp4')
.run()
)
How is this design pattern called, where can I find…
TheEagle
- 5,808
- 3
- 11
- 39
1
vote
0 answers
DJANGO python error return qs._result_cache[0]
Im new using Django, Im coding for an ecommerce and everything is working as expected but an error raised even when the code is working!
Sorry for spanglish:
id = request.POST.get('id')
tamano = request.POST.get('size')
items =…
nsj1884
- 21
- 1
1
vote
0 answers
Override a sloted attribute with a class variable in python
The code below:
class A(object):
__slots__ = 'a'
def __init__(self, a):
self.a = a
print (A(4).a) # 4
class B(A):
a = 4
__slots__ = 'b'
B(4)
blows with:
Traceback (most recent call last):
File "", line 1, in…
Mr_and_Mrs_D
- 32,208
- 39
- 178
- 361
1
vote
1 answer
I want to call parent class method which is overridden in child class through child class object in Python
class abc():
def xyz(self):
print("Class abc")
class foo(abc):
def xyz(self):
print("class foo")
x = foo()
I want to call xyz() of the parent class, something like;
x.super().xyz()
Syed Fasih
- 23
- 6
1
vote
1 answer
Question about multiple inheritance, dynamic class creating and instantiation
Hello I have the following situation:
A specialized class that inherits from two parent class
The need to define the most specialized class at run time, based on some information that I get only when I start reading data from a database.
I…
Cracoras
- 347
- 3
- 16
1
vote
1 answer
Returning StringIO object
I have the following python code:
def parse_object(object):
data = object.read()
do_other_stuff(data)
def get_object():
content = "abc"
try:
object = StringIO()
object.write(content)
return object
…
Bojangles
- 39
- 4
1
vote
1 answer
Python: How can I initialise object in one module and use it in another
my setup:
mod1.py:
class cars:
def __init__(self,x,y,z):
self.x = x
mod2.py:
import mod1
obj = mod1.cars(x,y,z)
mod3.py
from mod2 import obj
Now, what's happening is when I am importing obj in mod3.py init method of cars is getting…
TheBeginner
- 405
- 5
- 23
1
vote
4 answers
Getting inputs to a function from a python object
I have a class. This class has a list of functions that are to be evaluated by a different program.
class SomeClass(object):
def __init__(self, context):
self.functions_to_evaluate = []
There is a function that adds functions to an…
RebeccaK375
- 871
- 3
- 17
- 28
1
vote
3 answers
Positional arguments and the self keyword
class Employee:
def __init__(self, first, last):
self.first = first
self.last = last
def fullname():
return '{} {}'.format(self.first, self.last)
emp = Employee('Rob', 'M')
print (emp.fullname())
You will notice…
Rob
- 545
- 3
- 21
1
vote
1 answer
Python @property setter not setting from instance call
I have a class (simplified view):
class Record():
OrderStatusMapping = dict(zip(['0', '1', '2'], ['NEWO', 'PARF', 'FILL']))
def __init__(self):
self._OrderStatus = None
@property
def OrderStatus(self):
return…
Jakob
- 1,129
- 9
- 24
1
vote
1 answer
How can we get a definitive list of everything (or nearly everything) stored in a python object?
When I say "stored" I mainly mean attributes, not container elements or values returned by __getitem__.
My first thought was to bypass any overloaded __getattribute__ method (aka, dot-operator) with object.__getattribute__. I thought I would then…
Toothpick Anemone
- 4,290
- 2
- 20
- 42
1
vote
1 answer
How to sum attributes of all instances of an object
I want to sum the costsum attribute for all the instances of an object.
class ActivityCenter:
def __init__(self, costpool, costsum, costdriver, cdunits):
self.costpool = costpool
self.costsum = costsum
self.costdriver =…
pierre_allouez
- 23
- 1
- 6