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https://wiki.freecad.org/Introduction_to_Python  

view -> panels -> python console
>>> Gui.runCommand('Std_ViewStatusBar',1)  
>>> Gui.runCommand('Std_ViewStatusBar',0)
>>> Gui.runCommand('Std_Workbench',19)   

>>> print("hello")
>>> help("print")

>>> dir()  

Gui.activateWorkbench("DraftWorkbench")
App.setActiveDocument("Unnamed")
App.ActiveDocument = App.getDocument("Unnamed")
Gui.ActiveDocument = Gui.getDocument("Unnamed")

doc = FreeCAD.newDocument()
box = doc.addObject("Part::Box", "myBox")