Runtime error ValueError: invalid \x escape

arcpy.Buffer_analysis("一个小点点","C:\Data\data\xianbuffer","100 Feet","FULL") arcpy.Buffer_analysis("一个小点点","C:\\Data\data\xianbuffer","100 Feet","FULL")

Runtime error ValueError: invalid \x escape

arcpy.Buffer_analysis("一个小点点",r"C:\Data\data\xianbuffer","100 Feet","FULL")

<Result 'C:\Data\data\xianbuffer.shp'>`