diff --git a/scripts/_common.sh b/scripts/_common.sh
index 0f67779..186455f 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -89,61 +89,71 @@ myynh_install_python () {
 	ynh_handle_getopts_args "$@"
 	
 	# Check python version from APT
-	local PY_APT_VERSION=$(python3 --version | cut -d ' ' -f 2)
+	local py_apt_version=$(python3 --version | cut -d ' ' -f 2)
 	
 	# Check existing built version of python in /usr/local/bin
 	if [ -e "/usr/local/bin/python${python:0:3}" ]
 	then
-		local PY_BUILT_VERSION=$(/usr/local/bin/python${python:0:3} --version \
+		local py_built_version=$(/usr/local/bin/python${python:0:3} --version \
 			| cut -d ' ' -f 2)
 	else
-		local PY_BUILT_VERSION=0
+		local py_built_version=0
 	fi
 	
 	# Compare version
-	if [ $(myynh_version_compare $PY_APT_VERSION $python) -le 1 ]
+	if [ $(myynh_version_compare $py_apt_version $python) -le 1 ]
 	then
 		# APT >= Required
 		ynh_print_info --message="Using provided python3..."
 		
-		MY_PYTHON="python3"
+		py_app_version="python3"
 		
 	else
 		# Either python already built or to build 
-		if [ $(myynh_version_compare $PY_BUILT_VERSION $python) -le 1 ]
+		if [ $(myynh_version_compare $py_built_version $python) -le 1 ]
 		then
 			# Built >= Required
 			ynh_print_info --message="Using already used python3 built version..."
 			
-			MY_PYTHON="/usr/local/bin/python${PY_BUILT_VERSION:0:3}"
+			py_app_version="/usr/local/bin/python${py_built_version:0:3}"
 			
 		else
 			ynh_print_info --message="Installing additional dependencies to build python..."
 			
 			pkg_dependencies="${pkg_dependencies} tk-dev libncurses5-dev libncursesw5-dev libreadline6-dev libdb5.3-dev libgdbm-dev libsqlite3-dev libbz2-dev libexpat1-dev liblzma-dev wget tar"
 			ynh_install_app_dependencies "${pkg_dependencies}"
+			
 			# APT < Minimal & Actual < Minimal => Build & install Python into /usr/local/bin
 			ynh_print_info --message="Building python (may take a while)..."
+			
 			# Store current direcotry 
 			local MY_DIR=$(pwd)
+			
+			# Create a temp direcotry
+			tmpdir="$(mktemp --directory)"
+			cd "$tmpdir"
+			
 			# Download
-			wget -O "/tmp/Python-$python.tar.xz" "https://www.python.org/ftp/python/$python/Python-$python.tar.xz" 2>&1
+			wget --output-document="Python-$python.tar.xz" \
+				"https://www.python.org/ftp/python/$python/Python-$python.tar.xz" 2>&1
+			
 			# Extract
-			cd /tmp
 			tar xf "Python-$python.tar.xz"
+			
 			# Install
 			cd "Python-$python"
 			./configure --enable-optimizations
 			ynh_exec_warn_less make -j4
 			ynh_exec_warn_less make altinstall
-			# Clean
-			cd ..
-			ynh_secure_remove "Python-$python"
-			ynh_secure_remove "Python-$python.tar.xz"
-			# Set version
-			MY_PYTHON="/usr/local/bin/python${python:0:3}"
+			
 			# Go back to working directory
-			cd $MY_DIR
+			cd "$MY_DIR"
+			
+			# Clean
+			ynh_secure_remove "$tmpdir"
+			
+			# Set version
+			py_app_version="/usr/local/bin/python${python:0:3}"
 		fi
 	fi
 	# Save python version in settings 
@@ -154,7 +164,7 @@ myynh_install_python () {
 myynh_install_homeassistant () {
 	ynh_exec_as $app -H -s /bin/bash -c " \
 		echo 'create the virtual environment' \
-			&& $MY_PYTHON -m venv "$final_path" \
+			&& $py_app_version -m venv "$final_path" \
 		&& echo 'activate the virtual environment' \
 			&& source "$final_path/bin/activate" \
 		&& echo 'install last version of wheel' \