Questions tagged [errno]
errno is an integer variable, which is set by system calls and some library functions in the event of an error to indicate what went wrong. Its value is significant only when the return value of the call indicated an error.
errno
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The error of file is not found made me crazy and I cannot find the answer
can anyone tell me how can I remove the error?
This is my code
import matplotlib.pyplot as plt
import matplotlib.animation as animation
import numpy as np
from PIL import Image
dog_image_path = (r&...
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How can I force a call to read(2) to return EINVAL?
Context
I'm writing code that emulates one aspect of pidfds on platforms that don't support them (old Linux, other Unix).
I'm doing this a) in order to test some pidfd-related code on very old ...
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For wrappers around syscalls that retry on EINTR, how many times does retrying make sense?
Often syscalls like write(2), read(2), close(2) et cetera fail due to being interrupted by a signal with the errno value EINTR (say the size of the terminal window changed and SIGWINCH was received), ...
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"[Errno 22] Invalid argument" while trying to run a .py file on Windows
I am reaching out due to an issue while trying to run a ".py" file on Windows 11.
After entering this on the command prompt:
py \C:\Users\ibrah\AppData\Local\Programs\Python\Python3.12\...
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Node: Why are `os.constants.errno` values positive, while `util.getSystemErrorName` expects negative errnos?
All the values in os.constants.errno are positive, e.g.
{
E2BIG: 7,
EACCES: 13,
EADDRINUSE: 48,
EADDRNOTAVAIL: 49,
EAFNOSUPPORT: 47,
EAGAIN: 35,
EALREADY: 37,
EBADF: 9,
EBADMSG: 94,
...
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Error initializing pyaudio audio recording: [Errno -9998] Invalid number of channels
Hi I am trying to run a code where the following libraries are imported:
from RealtimeSTT import AudioToTextRecorder, from queue import Queue, import mediapipe as mp, import threading as tr, import ...
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1
answer
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Getting nltk certificate verify failed error with Visual Studio Code with Python3
I got this error. As you can see I have import nltk and nltk.download in my code per their guide.:
[nltk_data] Error loading words: <urlopen error [SSL:
[nltk_data] CERTIFICATE_VERIFY_FAILED] ...
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Working with errno in a cross-platform way in .NET
I am writing a cross-platform .NET library which relies on P/Invoke into system libraries. I need to handle errors which invoked functions report through the errno variable. This variable can be ...
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OSError: [Errno 5] EIO : When using 2 of the same sensors with same address on different I2C channels
I'm using a Cytron Maker Pi RP2040
Micropython
The sensors are VL53L1X from Adafruit
Sensor0 is connected to (SDA1)-GPIO26, (SCL1)-GPIO27
Sensor1 is connected to (SDA0)-GPIO16, (SCL0)-GPIO17
I found ...
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1
answer
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Why does NOT exist std::errno while "errno" does?
In order to make my codes more compliant with C++ style instead of C style, I want to replace errno with std::errno, and replace include <errno.h> with include <cerrno>.
To my supprise, ...
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Issue pushing python app to Heroku, "python: can't open file '/app/App.py'
I have a simple Python app that works well locally without issue.
I have a python app coded in VS Code with javascript, CSS, and HTML.
When I try to push to Heroku I keep getting errors no matter what ...
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Is it required to include <errno.h> to use perror?
I can print the human-readable version of errno using perror like this:
#include <errno.h>
#include <stdio.h>
int main(void) {
FILE *fp = fopen("file.txt", "r");
...
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What is this example of modifiable lvalue found in error.h ISO C99?
I'm reading the ISO C99 Standard and this example of a modifiable lvalue object: *errno() blew me away.
Please could you tell me if this possible implementation of errno is ISO C99 compliant?
int * ...
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Multiprocessing and Socket: "OSError: [Errno 98] Address already in use"
I utilized a Raspberry Pi and executed my Python script within the Thonny IDE. The script incorporates the Socket Module for data reception from UWB ESP32 devices, which are programmable with Arduino.
...
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C poll() returns ECHILD
Just encountered an undocumented error. The call to poll() returned ECHILD.
I have a very simple code, almost directly from the man:
struct pollfd fds[] = { fd, POLLIN, 0 };
while(should_continue) {
...
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