diff --git a/models/mace/json_to_extxyz.py b/models/mace/json_to_extxyz.py
index 3be497df..ad726f66 100644
--- a/models/mace/json_to_extxyz.py
+++ b/models/mace/json_to_extxyz.py
@@ -5,12 +5,11 @@
 
 import numpy as np
 import wget
-from tqdm.auto import tqdm
-
 from ase import units
 from ase.io import read, write
 from pymatgen.core import Structure
 from pymatgen.io.ase import AseAtomsAdaptor
+from tqdm.auto import tqdm
 
 __author__ = "Yuan Chiang"
 __date__ = "2023-08-10"
@@ -18,7 +17,7 @@
 mptrj_path = wget.download("https://figshare.com/ndownloader/files/41619375")
 # mptrj_path = "./MPtrj_2022.9_full.json"
 
-with open(mptrj_path, "r") as f:
+with open(mptrj_path) as f:
     json_data = json.load(f)
 
 pretty_json_string = json.dumps(json_data, indent=4, ensure_ascii=False)
@@ -27,7 +26,7 @@
 mptrj_extxyz_prefix = osp.join(os.curdir, "mptrj-gga-ggapu")
 os.makedirs(mptrj_extxyz_prefix, exist_ok=True)
 
-with open(mptrj_pretty_path, "r") as f:
+with open(mptrj_pretty_path) as f:
     json_data = json.load(f)
 
 combined = []