from reportlab.platypus import SimpleDocTemplate
from reportlab.lib.pagesizes import A4
from reportlab.lib.units import mm

def build_pdf(response, pagesize=A4):
    return SimpleDocTemplate(
        response,
        pagesize=pagesize,
        rightMargin=10*mm,
        leftMargin=10*mm,
        topMargin=10*mm,
        bottomMargin=10*mm,
    )