Cycle all checkpoints in a folder and test the accuracy

[hongxrsysu]

`import os
import subprocess

checkpoint_dir = "./work_dirs/roi_trans_swin_tiny_fpn_1x_dota_le90/"
config_path = "./work_dirs/roi_trans_swin_tiny_fpn_1x_dota_le90/roi_trans_swin_tiny_fpn_1x_dota_le90.py"
for filename in os.listdir(checkpoint_dir):
if filename.endswith(".pth"):
checkpoint_path = os.path.join(checkpoint_dir, filename)
cmd = f"python ./tools/test.py {config_path} {checkpoint_path} --eval mAP"
print(f"Testing checkpoint {checkpoint_path}")
process = subprocess.run(cmd, shell=True, stdout=subprocess.PIPE, universal_newlines=True)
output = process.stdout
print(output)`