tests: remove flake8 import and fix Path-string comparison

qpformat/file_formats/__init__.py

@@ -1,4 +1,4 @@
-import functools
+from functools import lru_cache
 import os
 import os.path as op
 
@@ -10,7 +10,6 @@
 from .single_npy_numpy import SingleNpyNumpy
 from .single_tif_holo import SingleTifHolo
 from .single_tif_phasics import SingleTifPhasics
-from flake8.style_guide import lru_cache
 
 
 class MultipleFormatsNotSupportedError(BaseException):
@@ -29,7 +28,7 @@ def __init__(self, *args, **kwargs):
     def __len__(self):
         return len(self.files)
 
-    @functools.lru_cache(maxsize=32)
+    @lru_cache(maxsize=32)
     def _get_cropped_file_names(self):
         """self.files with common path prefix/suffix removed"""
         prefix = os.path.commonprefix(self.files)
@@ -52,7 +51,7 @@ def _get_dataset(self, idx):
             raise NotImplementedError(msg)
         return self._dataset[idx]
 
-    @functools.lru_cache(maxsize=32)
+    @lru_cache(maxsize=32)
     def _identifier_data(self):
         """Return a unique identifier for the folder data"""
         # Use only file names

qpformat/file_formats/single_npy_numpy.py

@@ -1,10 +1,10 @@
+from functools import lru_cache
 import copy
 
 import numpy as np
 import qpimage
 
 from .dataset import SingleData
-from flake8.style_guide import lru_cache
 
 
 class SingleNpyNumpy(SingleData):

tests/test_single_tif_phasics.py

@@ -48,7 +48,7 @@
 def test_load_data():
     path = pathlib.Path(__file__).parent / "data" / "single_phasics.tif"
     ds = qpformat.load_data(path)
-    assert ds.path == path
+    assert pathlib.Path(ds.path) == path
     assert "SingleTifPhasics" in ds.__repr__()