Creating square grid polygon shapefile with Python?

I have the following coordinates

minx, maxx, miny ,maxy = 448262.080078, 450360.750122, 6262492.020081, 6262938.950073

I wish to create a square grid of size 1 m using python.

import math


minx,maxx,miny,maxy = 448262.080078, 450360.750122, 6262492.020081, 6262938.950073

size = 1

def set_bbox(minx, maxx, miny, maxy, distx, disty):
    nx = int(math.ceil(abs(maxx - minx)/distx))
    ny = int(math.ceil(abs(maxy - miny)/disty))
    new_maxx = minx + (nx*distx)
    new_miny = maxy - (ny*disty)
    return ((minx, new_maxx, new_miny, maxy),ny,nx)

# shift the bottom (right - down)

coord, ny, nx = set_bbox(minx,maxx,miny,maxy,size,size)
# left-up origin
origin = coord[0],coord[3]
# number of tiles
ncell = ny*nx