LoadImages() pathlib update (ultralytics#2140)

utils/datasets.py

@@ -120,8 +120,7 @@ def __iter__(self):
 
 class LoadImages:  # for inference
     def __init__(self, path, img_size=640, stride=32):
-        p = str(Path(path))  # os-agnostic
-        p = os.path.abspath(p)  # absolute path
+        p = str(Path(path).absolute())  # os-agnostic absolute path
         if '*' in p:
             files = sorted(glob.glob(p, recursive=True))  # glob
         elif os.path.isdir(p):
@@ -349,21 +348,24 @@ def __init__(self, path, img_size=640, batch_size=16, augment=False, hyp=None, r
         self.mosaic_border = [-img_size // 2, -img_size // 2]
         self.stride = stride
         self.path = path
-        
+
         try:
             f = []  # image files
             for p in path if isinstance(path, list) else [path]:
                 p = Path(p)  # os-agnostic
                 if p.is_dir():  # dir
                     f += glob.glob(str(p / '**' / '*.*'), recursive=True)
+                    # f = list(p.rglob('**/*.*'))  # pathlib
                 elif p.is_file():  # file
                     with open(p, 'r') as t:
                         t = t.read().strip().splitlines()
                         parent = str(p.parent) + os.sep
                         f += [x.replace('./', parent) if x.startswith('./') else x for x in t]  # local to global path
+                        # f += [p.parent / x.lstrip(os.sep) for x in t]  # local to global path (pathlib)
                 else:
                     raise Exception(f'{prefix}{p} does not exist')
             self.img_files = sorted([x.replace('/', os.sep) for x in f if x.split('.')[-1].lower() in img_formats])
+            # self.img_files = sorted([x for x in f if x.suffix[1:].lower() in img_formats])  # pathlib
             assert self.img_files, f'{prefix}No images found'
         except Exception as e:
             raise Exception(f'{prefix}Error loading data from {path}: {e}\nSee {help_url}')