[n8n] Add inventory management script for WhatsApp integration

So, I’ve been down the rabbit hole of building automations since February. Coming from a web dev background, I figured I’d just Python my way out of every work problem I had. I started with the basics posters for X and LinkedIn, the usual stuff. But I hit a wall In my day job, I work in sales. If you’ve ever worked sales in Nigeria, you know the drill with WhatsApp. A client pings you for a price, and if you don’t reply fast, they’re already messaging the next guy. My old workflow was a nightmare: 1. Client asks for a price. 2. I see it 20 minutes later (if I’m lucky). 3. I have to log into our office ERP—which is basically a dinosaur—find the price, and reply. 4. They pick what they want, ask for an invoice, and I start the whole ERP dance again. Total time? 20 to 45 minutes I wrote two Python scripts to speed it up (one for prices, one for invoices), which got me down to 10 minutes, but I was still the bottleneck. I even tried a headless WhatsApp script that checked for messages every 15 minutes, Still it meant it was a timed system I saw people building these "pro" setups using expensive hosting and 50 different Google Sheets. My office wasn't going to pay for any of that, and I definitely wasn't paying for it out of pocket. So, I decided to self-host n8n on my own PC and see if I could force it to talk to my local Python scripts. It took four days of "why is this node failing?" and a lot of trial and error with the Execute Command node, but I finally got it. The time went from 45 minutes to less than one minute**.** https://preview.redd.it/35d05ywy90pg1.png?width=1783&format=png&auto=webp&s=262fda8a3398885eefa4612a8448929412b13828 Client sends a request -> n8n triggers the Python price script -> Price sent. Client selects items/asks for invoice -> n8n triggers the invoice script -> PDF sent. https://preview.redd.it/j3q8eeku90pg1.png?width=1065&format=png&auto=webp&s=b055c101b0ca14f7291cf0aaafd630c9477b795d All in less than sixty seconds. I’m not even touching my phone; it just happens while I’m focused on other stuff. https://preview.redd.it/q2n1p49r90pg1.png?width=1912&format=png&auto=webp&s=2282314ea1ea72c7ec17309cf0d57ec6925b36af I’m currently working on an inventory management script to plug into the same flow so I can handle stock checks via WhatsApp too. Anyone mixing python and n8n as well, what has been your results