محیط Python، venv و pip¶

which python3
python3 --version
which pip3
pip3 --version

mkdir -p ~/projects/python-env-demo
cd ~/projects/python-env-demo

python3 -m venv .venv

source .venv/bin/activate

python -m pip install --upgrade pip

pip install numpy pandas matplotlib

python -c "import numpy, pandas, matplotlib; print('PYTHON_ENV_OK')"

pip freeze > requirements.txt

pip install -r requirements.txt

deactivate

mkdir -p scripts logs

cat > scripts/main.py <<'PYCODE_MAIN'
import os
import platform
from datetime import datetime

print("Python venv job is running")
print("User:", os.getenv("USER"))
print("Host:", platform.node())
print("Time:", datetime.now())
PYCODE_MAIN

cat > run-python-venv.slurm <<'SLURM_JOB'
#!/bin/bash
#SBATCH --job-name=python-venv
#SBATCH --partition=normal
#SBATCH --nodes=1
#SBATCH --ntasks=1
#SBATCH --cpus-per-task=2
#SBATCH --mem=4G
#SBATCH --time=00:30:00
#SBATCH --output=logs/python-venv-%j.out
#SBATCH --error=logs/python-venv-%j.err

cd ~/projects/python-env-demo
source .venv/bin/activate
python scripts/main.py
SLURM_JOB

sbatch run-python-venv.slurm