"It's hard to imagine a machine learning engineer who doesn't use Python. So, if you've waited for the right moment to start learning Python, this is that moment." -Andriy Burkov, The Hundred-Page Machine Learning Book
It's as true for ML as it is for IoT projects. Although considered mainstream and de-facto, it's not actually exclusive. It's a trend I'd wish people would break away from but will likely not change anytime soon.