Added Python checks

install.sh

@@ -4,11 +4,24 @@ git submodule init
 git submodule update
 cd search/pybinds/
 
+if hash python 2>/dev/null; then
+    if python -c 'import sys; print(sys.version_info[0])' | grep -q 3; then
+        echo "Python version 3 confirmed"
+    else
+        echo "Python detected, but it must be version 3.x";
+        exit 1;
+    fi
+else
+    echo "Python not found"
+    exit 1;
+fi
+
+
 # Check for cmake version 3 under "cmake" and "cmake3"
-if hash cmake 2>/dev/null; then
-    cmake ./
-elif hash cmake3 2>/dev/null; then
+if hash cmake3 2>/dev/null; then
     cmake3 ./
+elif hash cmake 2>/dev/null; then
+    cmake ./
 else
     echo >&2 "Cannot find cmake. Aborting..."
     exit 1