Train neural net on another computer? I have a complex neural net that will take forever on my laptop to train and i dont have a computer with a GPU, is there a way to run a python script on another computer without having to install an IDE on that computer? (for instance, if i went to an internet cafe)
Python doesn't require an IDE. You just need to install the Python interpreter to run a Python program.

Running machine learning on another computer is in fact industry standard. Google, Amazon and Azure can provide you a virtual machine, which you can run anything you want. 

I personally rent a powerful machine with GPUs on Google to do my machine learning analysis. It's not free but very powerful.