I installed python 3.9.1 on my Raspberry Pi following the instructions here https://www.ramoonus.nl/2020/10/06/how-to-install-python-3-9-on-raspberry-pi/ and set it as the default python interpreter. I got my compiling and linking parameters for embedded Python following the instructions here https://docs.python.org/3.9/extending/embedding.html#compiling-and-linking-under-unix-like-systems I tried a simple test with the following code (test.c) : and then gcc -I/usr/local/opt/python-3.9.1/include/python3.9 -I/usr/local/opt/python-3.9.1/include/python3.9 -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -c
Tag: python
What is the usage of 2nd parameter in os.execl()
This question is inspired by the comments in Why am I getting an “execv(file, args)” error when using execl()?. When we use The second parameter seems redundant for me, can anyone help explain why we need this parameter? Answer In the old good days without graphical monitors and without mice, a text-only console (or even a teletype) was the only
How to send and execute multiple events in one file stream by writting to “/dev/input/EventX”
I am writting to a specific eventX file in /dev/input/, to trigger “hardware” events. The problem is, the events get executed, only after the file has closed and to trigger new events, the file needs to be reopened. It’s as if all the events are put on a queue and then when the file closes, they get executed. For example
Is there any way to know the command-line options available for a separate program from Python?
I am relatively new to the python’s subprocess and os modules. So, I was able to do the process execution like running bc, cat commands with python and putting the data in stdin and taking the result from stdout. Now I want to first know that a process like cat accepts what flags through python code (If it is possible).
How can I create a TCP connection in Python between 2 PCs
So far I have made a VERY basic client/server application that creates a TCP connection. I have a lot of programming experience, just never did this low-level stuff and especially nothing with networks. Note that all the prints are just to help me figuring out what is going on. One of the known issues is that jsonip sometimes gives me
How to keep my web app running after exiting from EC2 CLI
I have tried tmux to keep my Streamlit app running on my AWS EC2 instance but it is not working, I am new to AWS and Linux, anybody ?? Answer I suggest you use screen Utility. Start new Screen You can start a new screen by the following command Then Press Enter to Start using Screen. Detach Screen Press Ctrl+A+D
Adding dependencies to default Github Actions script
I have a Python web app on Azure that gets deployed via Github actions. I use the default deployment script that is created by the Azure deployment center (full script shown below). In order for my application to work, I must SSH into the deployment machine after each deployment and manually activate the virtual environment and install packages that aren’t
How to make python script type when prompted on shell
Something similar to this: How to make python script press ‘enter’ when prompted on Shell Like that question, if I have test_enter.py: and this file: But instead of just a new line, I want it to type something then press “enter”. Is that possible? Answer Script to call: Caller script: Run command Output:
error: [Errno 13] Permission denied: ‘./configure’ when use pip3 install matplotlib on termux
I’m newbie I tried to install the matplotlib package using pip but got this error python: 3.9.0 pip: 20.2.4 Is there a way to solve this problem? I followed the instructions of https://wiki.termux.com/wiki/Python https://matplotlib.org/users/installing.html#installing-an-official-release but still got the error Answer i have fixed this by use this command
Address already in use – FastAPI
I keep getting [Errno 98] Address already in use But the address is not in use. I tried to change the ip and port but It isn’t budging. uvicorn main:app –reload also tried uvicorn main:app –host=172.0.0.2 –port=5000 then it gives [Errno 99] error while attempting to bind on address (‘172.0.0.2’, 5000): cannot assign requested address I tried running a flask