run bash script from python

alternative.py

import os
cmd = 'wget -O products.csv --user="xxx" --password="xxx" http://online.xxx.com/download_xxx_products.php'
os.system(cmd)

download.py

import os
cmd = 'bash download.sh'
os.system(cmd)

download.sh

#!/bin/bash
echo "Downloading products file.." 
wget -O products.csv --user='xxx' --password='xxx' http://online.xxx.com/download_xxx_products.php
echo "Downloading customers file.."
echo "Downloading orders file.."
echo "Tasks completed."