Not every tool is in ArcPy at Pro 1.0. If you are porting tools, it is important to remember this. A complete list of tools not in ArcGIS Pro 1.0 can be found here (http://pro.arcgis.com/en/pro-app/tool-reference/appendices/unavailable-tools.htm).
Lots of functions are missing, but that doesn't mean you shouldn't try out Pro. It's a wonderfully fun product, and the 3D really makes your data pop out. I also feel that the function layouts are more intuitive, so it's easy to get started.
Moving from the 2.x framework of Python can also be daunting as well. There is a tool for analyzing your scripts, toolboxes and/or models in Pro found here. (http://pro.arcgis.com/en/pro-app/tool-reference/data-management/analyzetoolsforpro.htm)
You'll get back a nifty little report telling you what will not work. It's very helpful in trying to find where the fails will occur.
Check them out and happy coding!