问从python中增加plantUML中的图形大小？

EN

from plantuml import PlantUML
import os
from os.path import abspath
from shutil import copyfile

os.environ['PLANTUML_LIMIT_SIZE'] = str(4096 * 4)                       # set max with to 4 times the default (16,384)

server = PlantUML(url='http://www.plantuml.com/plantuml/img/',
                          basic_auth={},
                          form_auth={}, http_opts={}, request_opts={})


diagram_dir = "./Diagrams"
#directory = os.fsencode()
for file in os.listdir(diagram_dir):
  filename = os.fsdecode(file)
  if filename.endswith(".txt"):
    server.processes_file(abspath(f'./Diagrams/{filename}'))

@startuml

'Enforce straight lines
skinparam linetype ortho

' Set direction of graph hierarchy
Left to Right direction

' create work package data
rectangle "something something something" as ffd0
rectangle "something something something" as ffd1
rectangle "something something something something  something" as ffd2
rectangle "something something something something" as ffd3
rectangle "something something somethingsomethingsomething" as ffd4
rectangle "something something something something something something" as ffd5
rectangle "something something something something" as ffd6
rectangle "something something something " as ffd7

' Implement graph hierarchy
ffd0-->ffd1
ffd1-->ffd2
ffd2-->ffd3
ffd3-->ffd4
ffd4-->ffd5
ffd5-->ffd6
ffd6-->ffd7
@enduml