[Python] Update cantera.data module

interfaces/cython/cantera/__init__.py

@@ -7,6 +7,7 @@
 from .liquidvapor import *
 from .onedim import *
 from .utils import *
+from .data import *
 import cantera.interrupts  # Helps with standalone packaging (PyInstaller etc.)
 
 import os

interfaces/cython/cantera/data.py

@@ -0,0 +1,25 @@
+# This file is part of Cantera. See License.txt in the top-level directory or
+# at https://cantera.org/license.txt for license and copyright information.
+
+from pathlib import Path
+from ._utils import get_data_directories, add_directory
+
+
+def list_data_files(ext=".yaml"):
+    """
+    Lists input data files.
+
+    :param ext:
+        Extension of files to be displayed.
+    :return:
+        List of input data files.
+    """
+    data_files = []
+    for folder in get_data_directories():
+        here = Path(folder)
+        if here.is_dir():
+            files = [x.name for x in here.iterdir() if x.name.endswith(ext)]
+        data_files.extend(files)
+    data_files = list(set(data_files))
+    data_files.sort()
+    return data_files

interfaces/cython/setup.cfg.in

@@ -46,14 +46,12 @@ install_requires =
 python_requires = >=@py_min_ver_str@
 packages =
     cantera
-    cantera.data
 
 [options.package_data]
-cantera.data = *.*, */*.*
 # The module extension needs to be here since we don't want setuptools to compile
 # the extension, so there are no ``source`` files in the setup.py ``extension`` and
 # we have to treat the module as package data.
-cantera = *.pxd, *@module_ext@, test/*.txt, examples/*.txt
+cantera = *.pxd, *@module_ext@, test/*.txt, examples/*.txt, data/*.*
 
 [options.extras_require]
 hdf5 = h5py