Blender 2.8 vertices of object doesn't update after location change in python

Question

I import a .fbx object and move the location. Then I try to print the local coordinates of the object. Regardless of where I move it, it prints the same local coordinates leading to me believe that the mesh vertices are not being updated. The snippet is attached below.

bpy.ops.import_scene.fbx( filepath = "sample.fbx" )
myObj  = bpy.data.objects['testObj']
print (myObj.data.vertices[0].co)
myObj.location = mathutils.Vector((1,3,5))
print (myObj.data.vertices[0].co)

This prints the same values both times. How do I update it? I would appreciate an answer for Blender 2.8

Answer 1

For the scene global coordinate system, multiply by the object's world matrix:

myObj  = bpy.data.objects['testObj']
print (myObj.data.vertices[0].co)
myObj.location = mathutils.Vector((1,3,5))
print (myObj.matrix_world @ myObj.data.vertices[0].co) # <---- 

Answer 2

This code is to be run in blender 2.9 It explain how to get or convert local coordinates of a vertex to global coordinates.

#############################################################
# imports :
import bpy
from mathutils import Vector

#############################################################
# Add a Cube and Get the initial local coordinates of vertex id 0,
# Get the initial Cube matrix_world,
# Calculate the initial vertex id 0 Global Coordinates :

bpy.ops.mesh.primitive_cube_add()
Cube  = bpy.context.object
Mw = Cube.matrix_world
Vert0_Lco = Cube.data.vertices[0].co
Vert0_Gco = Mw @ Vert0_Lco

print (f"Vert 0 initial Local coordinates :\n{Vert0_Lco}") # should be (-1, -1, -1)
print (f"Cube initial Matrix world :\n{Mw}") # should be the identity Matrix
print (f"Vert 0 initial Global coordinates :\n{Vert0_Gco}") # should be (-1, -1, -1) also

#############################################################
# Make a translation vector :
# Translate the cube,
# Get the final Cube matrix_world,
# Calculate the final vertex id 0 Global Coordinates :

Trans_Vector = Vector((1,3,5))

'''Now If you want the Cube matrix_world to be updated after the translation transform dont use<<< Cube.location = Trans_Vector >>>, instead use :'''

Mw.translation += Trans_Vector

print (f"Vert 0 final Local coordinates :\n{Vert0_Lco}")#Should be the same ( (-1, -1, -1) dont change after transform)
print (f"Cube final Matrix world :\n{Mw}") # should change to :
'''
Matrix(((1, 0, 0, 1 )
        (0, 1, 0, 3 )
        (0, 0, 1, 5 )
        (0, 0, 0, 1 )))
'''
print (f"Vert 0 final Global coordinates :\n{Vert0_Gco}") # should change to (0, 2, 4)