Glad the comment helped you. I didn't think that was going to be the issue, just wanted to mention it.
I'm sure you are not using the third option to access the data since that would generate the following error:
IOError: [Errno 2] No such file or directory: 'C:\\GeoNet\\writeFeatures\\01.gdb\\Lisbon_3D\\Points10'
Ignore the first part of the path, since it refers to the location on my drive. The error in this case is caused since the folder "Lisbon_3D" does not exist and therefor the text file Points10 cannot be created. The Feature Dataset is not stored as a physical folder in the geodatabase "folder".
There is another tip I would like to share. You showed two ways to store the path to the data:
- double backslashes
- single forward slashes
There is a third way I normally use, which may be faster and that is the raw ("r") notation. If you open the properties of a layer in ArcMap and go to the Source tab, you can copy the path to the data:
I you past it and correct it to "C:\GeoNet\writeFeatures\01.gdb\Lisbon_3D\Points10" you will only have to place an "r" before it to make it a valid path in Python (see line 3). Your options are:
points = "D:\\OneDrive\\Documents\\Tese\\TrabalhoPratico\\Final\\01.gdb\\Lisbon_3D\\Points10"
points = "D:/OneDrive/Documents/Tese/TrabalhoPratico/Final/01.gdb/Lisbon_3D/Points10"
points = r"D:\OneDrive\Documents\Tese\TrabalhoPratico\Final\01.gdb\Lisbon_3D\Points10"
This might save you some time.