code formatting should be used
/blogs/dan_patterson/2016/08/14/script-formatting
If you are creating a featureclass, you need to specify *.shp if a shapefile is required and its destination is a folder, otherwise, you need to specify a geodatabase location.
Also, you need to "raw encode" you paths if using a single backslash
eg... r"C:\YourFolderPath\AnotherFolder\A_geodatabase.gdb"
Create Feature Class—Data Management toolbox | Documentation