refactor: replace os.path with pathlib

Drop legacy `from os import path` and `os.path.X` usages in favour of
`pathlib.Path`. Internal-only refactor; no public API changes.

Refs PyAutoLabs/PyAutoFit#1257.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: 2 people

autolens/analysis/positions.py

@@ -18,7 +18,7 @@
 """
 import numpy as np
 from typing import Optional
-from os import path
+from pathlib import Path
 
 import autoarray as aa
 import autofit as af
@@ -124,7 +124,7 @@ def output_positions_info(
 
         flag = "w+" if overwrite_file else "a+"
 
-        with open_(path.join(output_path, "positions.info"), flag) as f:
+        with open_(Path(output_path) / "positions.info", flag) as f:
 
             positions_fit = SourceMaxSeparation(
                 data=self.positions,

docs/conf.py

@@ -10,13 +10,13 @@
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
-# documentation root, use os.path.abspath to make it absolute, like shown here.
+# documentation root, use Path(...).resolve() to make it absolute, like shown here.
 #
 
-import os
 import sys
+from pathlib import Path
 
-sys.path.insert(0, os.path.abspath("."))
+sys.path.insert(0, str(Path(".").resolve()))
 
 import autolens
 

test_autolens/analysis/analysis/test_analysis_dataset.py

@@ -1,4 +1,4 @@
-from os import path
+from pathlib import Path
 import os
 import pytest
 
@@ -9,7 +9,7 @@
 import autolens as al
 from autolens import exc
 
-directory = path.dirname(path.realpath(__file__))
+directory = Path(__file__).resolve().parent
 
 
 def test__modify_before_fit__inversion_no_positions_likelihood__raises_exception(

test_autolens/analysis/analysis/test_analysis_lens.py

@@ -1,10 +1,10 @@
-from os import path
+from pathlib import Path
 import pytest
 
 import autofit as af
 import autolens as al
 
-directory = path.dirname(path.realpath(__file__))
+directory = Path(__file__).resolve().parent
 
 
 def test__tracer_for_instance(analysis_imaging_7x7):

test_autolens/analysis/test_analysis.py

@@ -1,5 +1,5 @@
 import numpy as np
-from os import path
+from pathlib import Path
 import os
 import pytest
 
@@ -10,7 +10,7 @@
 import autolens as al
 from autolens import exc
 
-directory = path.dirname(path.realpath(__file__))
+directory = Path(__file__).resolve().parent
 
 
 def test__tracer_for_instance(analysis_imaging_7x7):

test_autolens/analysis/test_plotter.py

@@ -1,21 +1,20 @@
-import os
 import shutil
-from os import path
+from pathlib import Path
 
 import pytest
 import autolens as al
 from autolens.analysis import plotter as vis
 
-directory = path.dirname(path.realpath(__file__))
+directory = Path(__file__).resolve().parent
 
 
 @pytest.fixture(name="plot_path")
 def make_plotter_plotter_setup():
-    return path.join("{}".format(directory), "files")
+    return directory / "files"
 
 
 def test__tracer(masked_imaging_7x7, tracer_x2_plane_7x7, plot_path, plot_patch):
-    if os.path.exists(plot_path):
+    if plot_path.exists():
         shutil.rmtree(plot_path)
 
     plotter = vis.Plotter(image_path=plot_path)
@@ -25,21 +24,21 @@ def test__tracer(masked_imaging_7x7, tracer_x2_plane_7x7, plot_path, plot_patch)
         grid=masked_imaging_7x7.grids.lp,
     )
 
-    assert path.join(plot_path, "galaxies_images.png") in plot_patch.paths
+    assert str(plot_path / "galaxies_images.png") in plot_patch.paths
 
     image = al.ndarray_via_fits_from(
-        file_path=path.join(plot_path, "tracer.fits"), hdu=0
+        file_path=plot_path / "tracer.fits", hdu=0
     )
 
     assert image.shape == (5, 5)
 
 
 def test__image_with_positions(image_7x7, positions_x2, plot_path, plot_patch):
-    if os.path.exists(plot_path):
+    if plot_path.exists():
         shutil.rmtree(plot_path)
 
     plotter = vis.Plotter(image_path=plot_path)
 
     plotter.image_with_positions(image=image_7x7, positions=positions_x2)
 
-    assert path.join(plot_path, "image_with_positions.png") in plot_patch.paths
+    assert str(plot_path / "image_with_positions.png") in plot_patch.paths

test_autolens/analysis/test_positions.py

@@ -1,5 +1,5 @@
 import os
-from os import path
+from pathlib import Path
 import pytest
 
 from autoconf.dictable import output_to_json, from_json, from_dict
@@ -21,9 +21,7 @@ def test__check_positions_on_instantiation():
 
 
 def test__output_positions_info():
-    output_path = path.join(
-        "{}".format(os.path.dirname(os.path.realpath(__file__))), "files"
-    )
+    output_path = Path(__file__).resolve().parent / "files"
 
     positions_likelihood = al.PositionsLH(
         positions=al.Grid2DIrregular([(1.0, 2.0), (3.0, 4.0)]), threshold=0.1
@@ -35,7 +33,7 @@ def test__output_positions_info():
 
     positions_likelihood.output_positions_info(output_path=output_path, tracer=tracer)
 
-    positions_file = path.join(output_path, "positions.info")
+    positions_file = output_path / "positions.info"
 
     with open_(positions_file, "r") as f:
         output = f.readlines()

test_autolens/analysis/test_result.py

@@ -1,4 +1,4 @@
-import os
+from pathlib import Path
 import numpy as np
 import pytest
 
@@ -9,7 +9,7 @@
 from autolens.analysis import result as res
 from autolens.imaging.model.result import ResultImaging
 
-directory = os.path.dirname(os.path.realpath(__file__))
+directory = Path(__file__).resolve().parent
 
 
 def test__max_log_likelihood_tracer(

test_autolens/conftest.py

@@ -1,5 +1,5 @@
 import os
-from os import path
+from pathlib import Path
 from unittest.mock import MagicMock
 
 import pytest
@@ -21,7 +21,7 @@ def __init__(self):
         self.paths = []
 
     def __call__(self, path, *args, **kwargs):
-        self.paths.append(path)
+        self.paths.append(str(path))
 
 
 @pytest.fixture(name="plot_patch")
@@ -34,14 +34,14 @@ def make_plot_patch(monkeypatch):
     return plot_patch
 
 
-directory = path.dirname(path.realpath(__file__))
+directory = Path(__file__).resolve().parent
 
 
 @pytest.fixture(autouse=True)
 def set_config_path(request):
     conf.instance.push(
-        new_path=path.join(directory, "config"),
-        output_path=path.join(directory, "output"),
+        new_path=directory / "config",
+        output_path=directory / "output",
     )
 
 
@@ -51,7 +51,7 @@ def remove_logs():
     for d, _, files in os.walk(directory):
         for file in files:
             if file.endswith(".log"):
-                os.remove(path.join(d, file))
+                os.remove(Path(d) / file)
 
 
 ############

test_autolens/imaging/model/test_analysis_imaging.py

@@ -1,4 +1,4 @@
-from os import path
+from pathlib import Path
 import pytest
 
 import autofit as af
@@ -10,7 +10,7 @@
 from autolens import exc
 
 
-directory = path.dirname(path.realpath(__file__))
+directory = Path(__file__).resolve().parent
 
 
 def test__make_result__result_imaging_is_returned(masked_imaging_7x7):