import subprocess
import sys
blender_cmd = "blender"
blender_script = "fill_dm_code.py"
blender_process = subprocess.Popen([blender_cmd,"-b","-P",blender_script],stdout=subprocess.PIPE,stderr=subprocess.PIPE,text=True)

#实时读取输出
while True:
    output_line = blender_process.stdout.readline()
    if output_line == "" and process.poll() is not None:
        break
    if output_line:
        print(output_line.strip())


error = blender_process.communicate()[1]

if error:
    print("Error",error.strip())

blender_process.wait()