From 3ea992c61c3642b2c5f174c8ed96e64265870792 Mon Sep 17 00:00:00 2001
From: Adam Ormondroyd <52655393+AdamOrmondroyd@users.noreply.github.com>
Date: Sat, 2 Mar 2024 00:35:10 +0000
Subject: [PATCH] Cast `root` to `str` to allow e.g. a `pathlib.Path` object to
 be used (#358)

* cast root to string in case it is a path

* move import to top

* bump version to 2.6.1

---------

Co-authored-by: Will Handley <wh260@cam.ac.uk>
---
 README.rst               | 2 +-
 anesthetic/_version.py   | 2 +-
 anesthetic/read/chain.py | 3 ++-
 tests/test_reader.py     | 7 +++++++
 4 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/README.rst b/README.rst
index 5194d77f..a21078ae 100644
--- a/README.rst
+++ b/README.rst
@@ -2,7 +2,7 @@
 anesthetic: nested sampling post-processing
 ===========================================
 :Authors: Will Handley and Lukas Hergt
-:Version: 2.7.2
+:Version: 2.7.3
 :Homepage: https://github.com/handley-lab/anesthetic
 :Documentation: http://anesthetic.readthedocs.io/
 
diff --git a/anesthetic/_version.py b/anesthetic/_version.py
index 63bdf07f..66eabed2 100644
--- a/anesthetic/_version.py
+++ b/anesthetic/_version.py
@@ -1 +1 @@
-__version__ = '2.7.2'
+__version__ = '2.7.3'
diff --git a/anesthetic/read/chain.py b/anesthetic/read/chain.py
index c0a3a092..3b28a743 100644
--- a/anesthetic/read/chain.py
+++ b/anesthetic/read/chain.py
@@ -26,7 +26,7 @@ def read_chains(root, *args, **kwargs):
 
     Parameters
     ----------
-    root : str
+    root : str, pathlib.Path
         root name for reading files
 
     *args, **kwargs:
@@ -39,6 +39,7 @@ def read_chains(root, *args, **kwargs):
     :class:`anesthetic.samples.MCMCSamples` depending on auto-detection
 
     """
+    root = str(root)
     if 'burn_in' in kwargs:
         raise KeyError(
             "This is anesthetic 1.0 syntax. The `burn_in` keyword is no "
diff --git a/tests/test_reader.py b/tests/test_reader.py
index 05f7ec7f..134b2cac 100644
--- a/tests/test_reader.py
+++ b/tests/test_reader.py
@@ -1,5 +1,6 @@
 import anesthetic.examples._matplotlib_agg  # noqa: F401
 import os
+from pathlib import Path
 import pytest
 import numpy as np
 from numpy.testing import assert_array_equal, assert_array_almost_equal
@@ -300,3 +301,9 @@ def test_hdf5(tmp_path, root):
     samples_ = read_hdf(filename, key)
     assert_frame_equal(samples_, samples)
     assert type(samples_) is type(samples)
+
+
+@pytest.mark.parametrize('root', ['pc', 'gd'])
+def test_path(root):
+    base_dir = Path("./tests/example_data")
+    read_chains(base_dir / root)