Update bootstrap/py_bootstrap.sh

Co-authored-by: Márton Szász <szaszm@apache.org>

bootstrap/py_bootstrap.sh

@@ -6,20 +6,19 @@ if ! command -v python3 &>/dev/null; then
     exit 1
 fi
 
-# Check if virtualenv is installed
-if ! command -v python3 -m venv --help &>/dev/null; then
-    echo "virtualenv is not installed"
-    exit 1
-fi
-
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 VENV_DIR="$SCRIPT_DIR/venv"
 
+set -e
+
 if [ -d "$VENV_DIR" ]; then
     source "$VENV_DIR/bin/activate"
 else
     echo "Creating virtualenv"
-    python3 -m venv "$VENV_DIR"
+    if ! python3 -m venv "$VENV_DIR"; then
+        echo "Creating virtualenv failed. Is venv installed?"
+        exit 1
+    fi
     source "$VENV_DIR/bin/activate"
     pip install -r "$SCRIPT_DIR/requirements.txt"
 fi