Update interface_python.md

MBsysC/readme_aux/interface_python.md

@@ -81,6 +81,9 @@ in the following files:
 
 _WARNING:_ the files are generated during the first attempt of compiling by Visual Studio, meaning you cannot edit thme before getting the error! 
 
+ __cython executable not found__:  
+ If the executable cython.exe is not found, just hardcode the path in CMake-gui (it was under C:\ProgramData\Anaconda2\Scripts\cython.exe on my computer)
+ 
 ### Build your project ###
 Follow the [tutorial](http://robotran-doc.git-page.immc.ucl.ac.be/TutorialModellingFeatures/output_tuto/c-code/bodiesJoint.html#build-an-run-the-project) but set the flag "SEPARATE_BUILD" to "ON":
   * With Cmake-gui: Just click on the box.
@@ -111,8 +114,14 @@ from mbs_dirdyn_py import *
 
 # Thirdly: load the mbs project file
 File    = 'FileName.mbs'                # Update the FileName
-my_path = sys.path[0]+"/../dataR/"+File # Complete path to the mbs file (auto-filled)
+# LINUX:
+
 mbs_data = MbsData(my_path)             # Create and load the MbsData structure
+# WINDOWS:
+my_path = sys.path[0]+"/../dataR/"+File # Complete path to the mbs file (auto-filled)
+buildPath = os.path.join(sys.path[0], "build","Release")
+mbs_data = MbsData(my_path, buildPath)             # Create and load the MbsData structure
+
 
 # Change whatever you need:
 # mbs_data.q0[2]=5.0           : Set the value of the joint 2 to 5.0