The documentation for the python API has an error. Currently it says:

# zero length vector
vec = mathutils.Vector((0.0, 0.0, 1.0))

# unit length vector
vec_a = vec.copy().normalize()


It should say:


# arbitrary length vector
vec = mathutils.Vector((0.0, 0.0, 1.0))

# unit length vector
vec_a = vec.normalized()



--- Operating System, Graphics card ---
Windows Vista, Intel

--- Blender version with error, and version that worked ---
fixed documentation above works with 2.67b.

--- Short description of error ---
The website is wrong.
http://www.blender.org/documentation/blender_python_api_2_67b_release/mathutils.html

--- Steps for others to reproduce the error (preferably based on attached .blend file) ---
paste the code above and test the "type" of the returned variable "vec_a". The type will be None with current documentation. The type will be Vector with the fixed documentation shown above.