How to set median value in edit mode trough script?

Question

Its possible to change that's median (global) value trough script?

Answer 1

BMesh version.

For an edit mode script can also use an edit mode bmesh.

Test script, move selected verts such that their mean global location is (1, 0, 0)

import bpy
import bmesh
from mathutils import Vector

coord = Vector((1, 0, 0))
space = 'GLOBAL'

context = bpy.context


ob = context.edit_object
mw = ob.matrix_world
coord = coord if space == 'LOCAL' else mw.inverted() @ coord
me = ob.data

bm = bmesh.from_edit_mesh(me)
verts = [v for v in bm.verts if v.select]
# need at least one selected
o = sum((v.co for v in verts), Vector()) / len(verts)

bmesh.ops.translate(
        bm,
        verts=verts,
        vec= coord - o
        )
        
bmesh.update_edit_mesh(me)

Answer 2

You should calculate the midpoint manually, then the difference vector that moves vertices and finally move selected parts in local coordinates because blender stores vertex-locations in local coordinates.

this code does such work: (just enter your desired value into world_pos variable)

import bpy
from mathutils import Vector as vec, Matrix as mat

# this is your input world position for center
world_pos = vec((4,0,0))

def move_center(world_pos:vec):
    obj = bpy.context.object
    bpy.ops.object.mode_set(mode='OBJECT')
    selected_verts = [v for v in obj.data.vertices if v.select]
    print(selected_verts)
    if len(selected_verts) == 0:
        return
    center_local = vec((0,0,0))
    for v in selected_verts:
        center_local += v.co
    center_local /= len(selected_verts)
    local_pos = obj.matrix_world.inverted() @ world_pos
    dif = local_pos - center_local
    for v in selected_verts:
        v.co += dif
    bpy.ops.object.mode_set(mode='EDIT')

if __name__ == "__main__":
    move_center(world_pos)