To compare the data from both sides of the language barriers, click on either the C/C++ frame or the Python frame and observe the values of the local variables in the Local Variables view.

You can drag variables into the Data View to examine and compare them. Alternatively, right-click on the variable name in the Source View and select Add to Data View… from the context menu.

Figure 77 displays variable a from Python frame callFact() added to the Data View. This variable value is passed as argument n in the C frame fact(). Adding n to the Data View allows the values to be compared side-by-side.