All Questions
793
questions
5
votes
2
answers
158
views
Python object creation behavior
Coming from Java, I have trouble understanding how objects are allocated in Python.
Consider this Python script:
x = ("a", "b")
y = ("a", "b")
print(x is y) # ...
0
votes
1
answer
24
views
Why could I be experiencing an unresolved reference error in Python? [closed]
Unresolved reference error with the code below; I've included all the references in the same file, however, I'm still getting an error
class sample:
@staticmethod
def some_method():
print(&...
- 39
0
votes
0
answers
18
views
Dereferencing with mongoengine
I have an AuctionDocument which reference an ItemDocument.
I want to be able to query all auctions for a selleruuid, and iterate over the results (and have access to Auction.item.auctioned for ...
- 86
-1
votes
1
answer
27
views
Why am I getting a "local variable 'connector' might be referenced before assignment" message?
Heres my code:
class AccountsDatabase:
def __init__(self):
try:
connector = sqlite3.connect('AccountsDB.db')
except sqlite3.Error as e:
self.return_error(e)
...
- 37
0
votes
0
answers
18
views
Python patched function mock called_with compares with modified data -- best way to fix?
I have a function (validate.py):
def _validate_data(data: dict[string,Any]):
pass
It's not implemented yet so its a stub. I want to verify that another function calls this one with an empty dict ...
- 40.7k
0
votes
1
answer
27
views
i need to restructure code for the addition of more equations with many similar use variables and keep the code succinct
I need to add 20 or so countries with part variable names like UK, US with multiple equations for each, each of which is structurally identical.
Some typical lines of code are shown ('model.add' etc ...
- 77
0
votes
2
answers
76
views
Working with SQLAlchemy and python. How can I get past Lazy Loading / Argument Errors
I've been trying to acquire a list of id's for all the accounts that a certain user follows. My database is defined below.
UserFollowers = Table(
"UserFollowers",
Base.metadata,
...
- 49
3
votes
1
answer
157
views
How to bind functions returning references with pybind11?
When binding C++ with pybind11, I ran into an issue regarding a couple of class members that return (const or non-const) references; considering the following snippet:
struct Data {
double value1;
...
- 1,745
0
votes
0
answers
28
views
Excel coding enter value chronologically
I'm trying to automate a spreadsheet to enter a value referencing another workbook but populate the next consecutive cell with the value from the same reference the following day but I don't want the ...
0
votes
1
answer
33
views
Relative Import In Unittest
I have reviewed several posts re: Relative vs Absolute imports, but none of the solutions proposed seemed to solve my problem.
I have a directory structure like the following:
--src
--dir1
...
- 885
0
votes
1
answer
41
views
References working differently than expected
I wrote some code to help me see references in action when using the * to "multiply" lists.
The program follows:
empty_row = [None] * len(A[0])
empty_matrix = [ empty_row ] * len(A)
for i ...
- 67
0
votes
1
answer
34
views
Referencing Environment with Global Python Variables
In the following program, there is a global variable, a, that I want to check the number of references to at each of the points 1, 2, 3, and 4.
import sys
a = 'my-string'
print(sys.getrefcount(a))
b ...
- 45
2
votes
1
answer
43
views
Python Read from csv1 and reference csv2 to write to csv3
I have two csv files, csv1 is the working file that changes, csv2 is static and used as a reference set.
csv1 - input.csv
Name
Type
Owner
Status
Date
Group
bananas
fruit
Joe
In Stock
1/1/23
apples
...
- 283
3
votes
1
answer
112
views
Unresolved reference 'turtle'
I was trying to import Turtle and Screen from turtle using the below code:
from turtle import Turtle, Screen
nora = turtle.Turtle()
screen = turtle.Screen()
but the editor(pycharm) shows-->
&...
- 55
0
votes
1
answer
59
views
SWIG C++ to Python: Initialize class by struct reference not working
I have a C++ library that contains a class that is constructed using a reference to a struct:
myclass.hpp:
className::className (params& pars): memberInitList
{
//some code that modifies state of ...
- 129