Check Python version before proceeding (<=3.8)

README.md

@@ -10,8 +10,9 @@ We assume you have unlimited access to the following when using this dataset: ic
 
 # Quick Start
 
-Execute `scripts/setup.sh`.
+Execute `scripts/setup.sh` from the project root.
 This script creates the virtualenvironment and prints an example invocation of the program for local testing.
+Failure to exeucte this script from the project root will **not** detect the current version of Python.
 
 # Data Processing
 

scripts/setup.sh

@@ -1,9 +1,32 @@
 #!/bin/bash
+MIN_PYTHON_VER=3.8
+
+source scripts/vercomp.sh
 
 cd app/ 2>/dev/null || true
+
+version=$(python -V 2>&1 | grep -Po '(?<=Python )(.+)')
+if [[ -z "$version" ]]
+then
+    echo "No Python detected" 
+    exit 1
+fi
+
+echo "Detected python version: $version."
+
+vercomp "$version" $MIN_PYTHON_VER # Return codes: 0 is equal, 1 is greater, 2 is less
+
+COMPARISON_CODE=$? 
+if [ $COMPARISON_CODE -eq 2 ];
+then
+  echo "Current Python versions is less than required ($MIN_PYTHON_VER)."
+  echo "Please upgrade your python version."
+  exit 1
+fi
+
 echo "Creating virtual environment in: $(pwd)"
 python3 -m pip install --user virtualenv
 virtualenv venv --python=python3
 source venv/bin/activate
 pip install -r requirements.txt
-echo "If running locally, try sudo -E venv/bin/python3 src/main.py recipes log.txt"
+echo "If running locally, try: sudo -E venv/bin/python3 src/main.py recipes log.txt"