How to run script in a new blender subprocess

Question

In my code I am trying to open a new blender subprocess with this code

I am trying to do some action like this how to run a give code = ''' import bpy''' like in code below, in that new blender subprocess how to run like a script in that new sub process that opens Example Script : 'C:/Users/Desktop/my_script.py'

import bpy
import subprocess

blenpath = 'C:/Program Files/Blender Foundation/Blender 2.93/blender.exe'

code = '''
import bpy
for obj in bpy.data.objects:
    obj.name = 'test_name'
'''

# how to run the code above in that new blender subprocess
# how to run like a script in that new sub process that opens 
# Example Script : 'C:/Users/Desktop/my_script.py'

cmd = [blenpath]
subprocess.Popen(cmd)

Answer 1

See all the python options here https://docs.blender.org/manual/en/latest/advanced/command_line/arguments.html#python-options

import bpy
import subprocess

temp_blend_path = 'C:/Users/naman/Desktop/test.blend'

filepath = 'C:/Users/Desktop/my_script.py'

process = subprocess.Popen([bpy.app.binary_path, "--factory-startup", "-b", temp_blend_path, "--python", filepath], stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE, encoding='utf-8')
process.wait()