support 3.13

Author: Tieqiong

.github/workflows/matrix-and-codecov-on-merge-to-main.yml

@@ -15,7 +15,7 @@ jobs:
     uses: Billingegroup/release-scripts/.github/workflows/_matrix-and-codecov-on-merge-to-main.yml@v0
     with:
       project: diffpy.pdffit2
-      python_versions: "3.11, 3.12"
+      python_versions: "3.11, 3.12, 3.13"
       c_extension: true
       headless: false
     secrets:

.github/workflows/publish-docs-on-release.yml

@@ -14,4 +14,4 @@ jobs:
       project: diffpy.pdffit2
       c_extension: true
       headless: false
-      python_version: 3.12
+      python_version: 3.13

.github/workflows/tests-on-pr.yml

@@ -14,6 +14,6 @@ jobs:
       project: diffpy.pdffi2
       c_extension: true
       headless: false
-      python_version: 3.12
+      python_version: 3.13
     secrets:
       CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

README.rst

@@ -72,7 +72,7 @@ If you use diffpy.pdffit2 in a scientific publication, we would like you to cite
 Installation
 ------------
 
-diffpy.pdffit2 supports Python 3.11 and 3.12.
+diffpy.pdffit2 supports Python 3.11, 3.12, and 3.13.
 
 Windows, macOS (non-Arm64), Linux
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -102,7 +102,7 @@ macOS (Arm64)
 
 Create a new conda environment ``diffpy.pdffit2_env``: ::
 
-        conda create -n diffpy.pdffit2_env python=3.12
+        conda create -n diffpy.pdffit2_env python=3.13
 
 Activate the environment: ::
 
@@ -121,7 +121,7 @@ Build from source
 
 For advanced users, obtain the source archive, and in the ``diffpy.pdffit2`` directory, run ::
 
-        conda create -n diffpy.pdffit2_env python=3.12 \
+        conda create -n diffpy.pdffit2_env python=3.13 \
                 --file requirements/test.txt \
                 --file requirements/conda.txt \
                 --file requirements/build.txt

pyproject.toml

@@ -14,7 +14,7 @@ maintainers = [
 description = "PDFfit2 - real space structure refinement program."
 keywords = ["PDF", "structure refinement"]
 readme = "README.rst"
-requires-python = ">=3.11, <3.13"
+requires-python = ">=3.11, <3.14"
 classifiers = [
         'Development Status :: 5 - Production/Stable',
         'Environment :: Console',
@@ -27,6 +27,7 @@ classifiers = [
         'Operating System :: Unix',
         'Programming Language :: Python :: 3.11',
         'Programming Language :: Python :: 3.12',
+        'Programming Language :: Python :: 3.13',
         'Topic :: Scientific/Engineering :: Physics',
         'Topic :: Scientific/Engineering :: Chemistry',
 ]