1,818 questions
1
vote
4
answers
74
views
When does python 3 execute the beginning of a generator function?
Python 3 seems not to execute the beginning of a generator function, from its first line up to the first yield at the time when the function is first called. Python seems to defer the initial ...
- 170
0
votes
0
answers
90
views
boost::asio::io_context stops running new tasks
I'm encountering an issue with the Boost.Asio library. My program uses a single io_context instance and multiple worker threads that call io_context::run(). Tasks are posted using spawn or post on the ...
- 5,214
0
votes
0
answers
124
views
Inquiry: _invoke() Hangs When Executing Query with Dify Plugin SDK
Inquiry: _invoke() Hangs When Executing Query with Dify Plugin SDK
I'm currently developing a plugin using the Dify Plugin SDK that connects to a database, executes a query, and returns the result. ...
0
votes
0
answers
27
views
Change generator invocation to get rid of subgenerators
I am trying to upgrade my code currently using azure durable-functions library from 1.5 to 2.0. As a part of the change, I would to get rid of the subgenerators usage.
Currently, my code is written as:...
- 2,238
1
vote
0
answers
78
views
Utility of yield keyword in f sharp
So far I know, we use it mostly for list/array comprehension. Here is two codes:
[ for x in range do (yield expression)]
else we can also drop the yield and still it works
[ for x in range do ...
-1
votes
3
answers
174
views
Is it possible to use 'foreach' on the same IEnumerable twice or more inside a method with 'yield'?
Very simple case: I have a list of items (1, 2, 3, 4, 5, 6, 7, 8, 9, 10). I need to filter it and drop a few first elements and a few last elements and to get a few items from the middle (for example ...
- 33
0
votes
0
answers
62
views
I am yielding to an ERB file, but it is rendering in plain text and not HTML. Why?
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0&...
2
votes
2
answers
225
views
How to access the last value in an async generator after a for await...of?
When using for await...of to iterate over an async generator, the final value (return value) seems to be consumed and inaccessible afterward. Here's a minimal example:
async function* exampleGenerator(...
- 642
2
votes
1
answer
62
views
The yield command will not work as it should in Ruby
In the book "The Well-Grounded Rubyist" edition 3 on page 185 is the code. And the code for my_each is on page 183. It also involve code on page 184:
Class Array
# Put the definition of ...
- 21
0
votes
0
answers
33
views
When will the lazy execution of a ParDo in Apache Beam Python be executed?
I'm wondering when would a generator value be evaluated when running in a beam pipeline and how the distributed computing would work in this case as the documentation for ParDos does not really ...
- 62
0
votes
0
answers
68
views
Linux real-time kernel frequently kills my app
I'm developing a near real-time application, that forwards messages in a endless loop(no yield, no sleep, no wait).
The messages come from shared memory, go to another blocks of shared memory, so my ...
- 2,165
2
votes
2
answers
72
views
Python - Generator not working with next method
I created a generator to perform pagination on an api:
def page_helper(req, timeout=5, page=1, **kwargs):
print(f"Page {page}", end="\r")
try:
response = req(params=...
- 920
0
votes
1
answer
81
views
How to force a stateful widget to redraw when setting state from within a "yielding stream" listener?
Nothing crazy what I am trying to achieve but I pull my hair on it for days.
I basically want to achieve the following: a long running process does internet accesses and processing of data with many ...
- 13.7k
0
votes
1
answer
53
views
Python skips recursion if yield is present
I have the following XML file:
<?xml version="1.0" encoding="UTF-8"?>
<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2" xmlns:okp=&...
- 676
1
vote
3
answers
104
views
how to catch throw and other exceptions in coroutine with 1 yield?
I have var DICTIONARY, which is a dictionary where the keys are English letters and the values are words that start with the corresponding letter. The initial filling of DICTIONARY looks like this:
...
- 24.6k
-1
votes
1
answer
48
views
how to generate correct output using 2 yield statements in coroutine?
i have var DICTIONARY, which is a dictionary where the keys are English letters and the values are words that start with the corresponding letter. The initial filling of DICTIONARY looks like this:
...
- 24.6k
0
votes
1
answer
54
views
How to yield only newly generated text
I have a Flask application that uses a RAG pipeline in the background, and I stream responses from vLLM. I'm currently using a function to parse and yield the streamed JSON responses. However, I'm ...
- 53
0
votes
1
answer
109
views
ensure connection inside generator function is closed by caller [closed]
Today, while programming, I found myself managing a resource (ssh connection) inside a generator function, something similar to the following:
#I decided to use a generator to avoid looping through ...
- 65
1
vote
1
answer
255
views
Simplest way in C# to defer task execution without synchronization context [closed]
Inside an async method in C#, I need to defer the execution (return the execution to the caller), and also to clear the synchronization context before proceeding with the execution.
The statement ...
- 157
1
vote
3
answers
312
views
Issues in Streaming response from flask-smorest
I'm encountering issues in streaming response in flask-smorest. I'm following the guidance here - https://flask.palletsprojects.com/en/2.3.x/patterns/streaming/ for streaming responses from my flask-...
- 59
1
vote
2
answers
155
views
pytest fixture _cleanup_data not printing expected message (Don't run cleanup section)
I'm having an issue with a pytest fixture in my Python code. The fixture is supposed to print a message after cleaning up test data, but the message is not being printed. I've checked the code and the ...
- 198
0
votes
1
answer
63
views
Python, Tkinter: Apply delay to function inside generator
I am making an application in python tkinter to visualize algorithms. I want to apply a delay (window.after()) to the function partition() called inside quick_sort. The window.after() seems to only ...
user14063491
-1
votes
1
answer
68
views
Surprising result with a conditional `yield` [duplicate]
I have the following Python code using yield:
def foo(arg):
if arg:
yield -1
else:
return range(5)
Specifically, the foo() method shall iterate over a single value (-1) if its ...
- 593
0
votes
1
answer
85
views
Python SciPy differential_evolution yield progress
I am using SciPy differential_evolution to solve an optimization problem. I have a web application that I want to show the progress in. What would be a good technique for giving intermediate feedback ...
- 33
1
vote
3
answers
282
views
Redefine input function in Python to yield a value from a predetermined list of values each time it's called
Is there a clean "Pythonic" way to write an input-replacement function in Python that will yield a value from a predetermined list of input values each time it's called?
raw_data = ['8', '2',...
- 1,473
0
votes
0
answers
106
views
Why does delay() suspend a coroutine but yield() doesn't, inside Kotlin's runTest{} function?
The simplified test below has been converted from using runBlocking to runTest to make it work with Kotlin Multiplatform. However, runTest causes it to fail. Debugging shows that the delay in job1 ...
- 5
0
votes
2
answers
466
views
Is it possible to yield one compressed file at a time in FastAPI into a single archive using StreamingResponse?
I have code that creates a zip archive of files and streams it. The problem is, for large requests, this means there can be minutes of processing time before the data is streamed, making cancelling ...
- 31
-1
votes
1
answer
115
views
Batch from yield don't start up concurrently
I'm currently trying to implement a file searcher that yields found files in batches so it can get processed concurrently. But my problem arrives when it yields and I pass it to a task. It never ...
- 65
1
vote
1
answer
108
views
Python - reverse nested dictionaries dict in dict
I am trying to reverse dictionary nesting such that dict2 in dict1 becomes dict1 in dict2. For this, I followed the method from the link:
Pythonic Way to reverse nested dictionaries
This dictionary ...
- 11
1
vote
1
answer
99
views
Is it pythonic to put return after yield? [closed]
Consider the following code:
def some_gen():
if some_condition:
yield "Condition"
return
for ....:
yield some_value
'return' after 'yield' hurts my eyes, is ...
- 41
-2
votes
3
answers
64
views
Why this python code is giving two different outputs for the same code or both are different codes? [duplicate]
This is Python code to print Fibonacci series using generator function.
Code 1:
def test_fib(n):
a = 0
b = 1
for i in range(n):
yield a
a = b
b = a+b
#end of ...
- 37
1
vote
1
answer
100
views
How to make an asynchronous principle of task execution from a task generator?
I have a problem, do you have any ideas for a solution? You need to add asynchronous tasks to the event loop without waiting for them to be completed (using await is not an option, otherwise there is ...
- 11
0
votes
0
answers
32
views
How to add a function with generator so that it selects certain strings php
I have a function with string output that outputs a sign in line 5. How to using a generator to add a function that will output line-by-line data from the first variable, where a new line is defined ...
- 1
1
vote
1
answer
68
views
Latency from sequential yield calls in python
I'm writing a code to read a set of pandas.DataFrames stored in h5 files and iterate over their rows. The aim of my code is to handle the dataset using a pytorch IterableDataset, but I belive my ...
- 11
0
votes
1
answer
39
views
Yield and revenue optimisation of a field: Can Timefold calculate that?
Here is a real life scenario and I wanted to know if TimeFold is relevant for that:
I would like to maximize the yield over years of a land to be planted with 2 species of olive trees.
I have 2 ...
- 480
0
votes
0
answers
204
views
why is GeneratorExit raised by this combination of yield & exception suppressing ContextDecorator?
My goal is that instead of writing
for item in items:
with MyCD():
... # processing logic
I would like to have a single line
for item in MyCD.yield_each_item_wrapped(items):
......
- 1,662
0
votes
1
answer
302
views
Enumerable.SelectMany throws Error CS0411 - cannot be inferred from the usage
I'm using c#, .net 6.0
I'm trying to convert IEnumerable method and ot's caller method to work asynchronously.
I have a code that looks something like that:
public IEnumerable<MyUser> ...
- 560
0
votes
2
answers
114
views
How can I convert IEnumerable method to work asynchronously [duplicate]
I'm using c#, .net 6.0
I'm trying to convert IEnumerable method and ot's caller method to work asynchronously.
I have a code that looks something like that:
public IEnumerable<MyUser> ...
- 560
1
vote
2
answers
136
views
Kotlin yield example
I am learning Kotlin and for the love of it, I cannot get the yield/sequence straight. Could someone please correct my code?
fun Sequence<Int>.mapIterable(transform: (Int)->Int) = sequence {
...
- 5,218
0
votes
1
answer
149
views
How to mock.patch a class method which is a generator/has yield
How to patch a generator class method. For e.g. in class below, how would we patch get_changed_diff_patch method?
class PassiveJsonMixin(JsonMixin):
"""
passive items that do ...
- 2,065
0
votes
2
answers
95
views
call a new function without closing the file
I have a method that opens a csv file and another method that I want to use to process this file -but I also need it to process different types of objects, so I want to keep it as an independent ...
- 179
0
votes
1
answer
149
views
Simpy - service time dependent on length of queue and resources availability
I want to modify this code to solve the following problem: Lets say we have two nurses. If both nurses are free then a patient can use both nurses and the treatment time is cut in half. A patient can ...
- 3
-1
votes
1
answer
73
views
Python - Class Content manager. Why __exit__ method is omitted if you put yield inside of it?
class OracleConnected():
def __init__(self):
self.oracle_username = oracle_username[1]
self.oracle_password = oracle_password[1]
self.dsn = cx_Oracle.makedsn(hostname[1], ...
0
votes
1
answer
72
views
How to catch a yield in a generator without having unused variable? [closed]
I have a warning 'res' is assigned a value but never used no-unused-vars with code similar to this:
function* cancelCredit(action) {
const res = yield call(/*Nice api call 1*/);
const res2 = ...
- 998
2
votes
5
answers
78
views
Converting list function to generator using yield
I am trying to convert a for loop into an iterator using yield, but I have failed in my attempts. I don't understand exactly why the yield isn't giving me the expected output. Does anyone know what ...
- 3,345
0
votes
1
answer
69
views
How to write a simple function in Julia similar to a function with yield keyword in python
I have a very simple function to illustrate yield keyword in python:
def simpleFun():
yield 1
yield 2
yield 3
x=simpleFun()
print(x.next())
print(x.next())
print(x.next())
which ...
- 4,378
1
vote
1
answer
589
views
Is "yield await" redundant in JavaScript async generator functions?
Promises yielded within async function* declarations seem to be automatically awaited before the iterator result is sent to the caller (source: MDN). Does this mean that yield await somePromise is ...
- 371
0
votes
1
answer
57
views
@yield not Displaying on Screen
I just started learning Laravel framework in order to start a new project. However, I have encountered a problem where the @yield function does not display the section on the screen. However, if I put ...
1
vote
2
answers
1k
views
Can yield from a context manager (or similar) multiple times after exception?
I'd like to report multiple errors while processing a list:
For example:
with MultipleExceptions.testItems(items) as value:
... process value
if value==3: raise Exception("3 err")
...
- 15.9k
0
votes
1
answer
94
views
What does the "yield" keyword do in the code provided? It generates a generator object but behaves differently in a loop [duplicate]
This question is with reference to this [Stackoverflow][1] post about the keyword "yield".
I understand that if there is a "yield" statement in the function, the function is called ...
