I am trying to compile and run the example from https://docs.python.org/3/extending/embedding.html#very-high-level-embedding , but failed. My environment is Ubuntu 20.04.2 LTS, with system shipped python3.8(statically built), libpython3-dev and libpython3.8-dev packages installed. What I’ve tried: main.…
Tag: python-3.x
Python script not able to find package when executed from terminal at bootup, what am I doing wrong? [Raspbian]
sorry in case this is obvious or redundant, I’ve been looking around on this site for an answer to this problem but I couldn’t find anything that would fix it What I am trying to achieve is executing a Python script when my raspberry pi turns on (after the desktop loads in) I’ve been trying …
python script error message ‘unknown column’ – Redhat
My Python script produces unknown column error on redhat 8.5 python 3.6.8. But works without issue on Ubuntu 20.04 with python 3.8.10 Would this be a python or redhat issue? Is it possible to gather more detailed logs? Link to full script https://github.com/michael-pellegrini/scripts/blob/master/xtime.py Redh…
Why are PATH args to subprocess.run() not portable between Linux and MacOS?
I’m having difficulty with portability between Linux and MacOS with the subprocess.run() method. On Linux, a command like below works just fine as long as someCommand is in my PATH (set in ~/.bashrc). However, on MacOS, the same command does not run, even though someCommand is in my PATH. Instead, I get…
Syntax error calling Python from C with fork-execv
I want to call a Python script as a child process from a C program using fork and execv. I have tested it calling bin/ls and it works: So I changed the C code to call the Create_Buffer() function in this Python file: The Python script has two functions; I want to call Create_Buffer(), so I changed my C file
Subprocess – Too many open Files in subprocess
On my system(using python3.6.9) I got the Too many open Files Error. I got the error while executing a subprocess in python. Traceback: I tried to look it up but permanently setting the ulimit didn’t work. I even build a function, that sets the ulimit before executing a subprocess. Answer I didn’t…
SWIG: Access Array of Structs in Python
Say I have the following static constexpr array of c struct: How can I access elements in ns1::ns2::PERSONS in python by using swig? One way I can think of is to create a accessor like const Person& get(uint32_t index) in the swig interface file. Tho, I wonder whether there is a more elegant way that I do…
Excessive disk writes when using numpy.memmap
I have implemented a file-backed HashTable using numpy.memmap. It appears to be functioning correctly, however, I notice that on Linux both KSysGuard and SMART are reporting ridiculous IO Write amounts. About 50x the amount of data that should be written. I have not tested this on other operating systems. Thi…
Behaviour of ROUND_HALF_DOWN , Python 3.9.5, decimal module
OS: fedora 34 workstation, GNU/Linux I am confused. In the decimal module documentation section “Rounding modes” says, I have an example I was expecting as result 25.25 because the sum results in n1 = 25.2555 has a 5 in the thousandths position, then must go DOWN to 0 and the hundredths position r…
npm install giving errors : [node version : 16.2.0 and npm version : 7.13.0]
The command used : sudo npm install I am trying to execute this command inside the a specific folder. The package.json file is as shown: I have included parts of the log file which mentioned about the errors. The logs are : I have included parts of the log file which mentioned about the errors. I have include…