Constructing file path within Python for Feature Class within Feature Dataset?

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Based on my understanding of the ArcGIS path structure, a feature class inside a feature dataset inside a geodatabase can be accessed by the following:

C:\Menu\Lunch.gdb\Sandwich\CheeseWhere Sandwich is the feature dataset and Cheese is the feature class.

In a python script, I want to construct this full path, so that I can check it using arcpy.Exists(x). I have the following variables (pseudocode):

WSpace = C:\Menu\Lunch.gdb\FDSName = SandwichFCName = CheeseConcatenating WSpace and FDSName gives the correct path to the feature dataset. What I need help with is tacking FCName onto the end. I would think the following code would work, but it renders a space instead of the backslash character:

fullPath = WSpace + FDSName + r"\" + FCNameInstead of r"\", I have also tried "\", and "/", but they all render a space. This seems like a simple syntax problem.



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