Continued working through the examples on ParametricParts.com, adding 3 more and fixing some variables that weren't updated in some of the older examples.

examples/FreeCAD/Ex010_Defining_an_Edge_with_a_Spline.py

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+#File: Ex010_Defining_an_Edge_with_a_Spline.py
+#To use this example file, you need to first follow the "Using CadQuery From Inside FreeCAD"
+#instructions here: https://github.com/dcowden/cadquery#installing----using-cadquery-from-inside-freecad
+
+#You run this example by typing the following in the FreeCAD python console, making sure to change
+#the path to this example, and the name of the example appropriately.
+#import sys
+#sys.path.append('/home/user/Downloads/cadquery/examples/FreeCAD')
+#import Ex010_Defining_an_Edge_with_a_Spline
+
+#If you need to reload the part after making a change, you can use the following lines within the FreeCAD console.
+#reload(Ex010_Defining_an_Edge_with_a_Spline)
+
+#You'll need to delete the original shape that was created, and the new shape should be named sequentially (Shape001, etc).
+
+#You can also tie these blocks of code to macros, buttons, and keybindings in FreeCAD for quicker access.
+#You can get a more information on this example at http://parametricparts.com/docs/examples.html#an-extruded-prismatic-solid
+
+import cadquery
+import Part
+
+#The workplane we want to create the spline on to extrude
+s = cadquery.Workplane("XY")
+
+#The points that the spline will pass through
+sPnts = [
+    (2.75, 1.5),
+    (2.5, 1.75),
+    (2.0, 1.5),
+    (1.5, 1.0),
+    (1.0, 1.25),
+    (0.5, 1.0),
+    (0, 1.0)
+]
+
+#Generate our plate with the spline feature and make sure it's a closed entity
+r = s.lineTo(3.0, 0).lineTo(3.0, 1.0).spline(sPnts).close()
+
+#Extrude to turn the wire into a plate
+result = r.extrude(0.5)
+
+#Get a cadquery solid object
+solid = result.val()
+
+#Use the wrapped property of a cadquery primitive to get a FreeCAD solid
+Part.show(solid.wrapped)
+
+#Would like to zoom to fit the part here, but FreeCAD doesn't seem to have that scripting functionality