fix: Re-established support for Python 3.9

Closes: #69

Author: andreas-vester

CHANGELOG.md

@@ -4,6 +4,8 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Fixed
+- Re-established support for Python 3.9 [GH#69](https://github.com/andreas-vester/df2img/issues/69).
 
 ## [0.2.20] - 2024-10-16
 ### Changed

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "df2img"
-version = "0.2.20"
+version = "0.2.21"
 description = "Save a Pandas DataFrame as image"
 authors = [
     {name = "Andreas Vester", email = "[email protected]"},
@@ -37,7 +37,6 @@ dev-dependencies = [
     "mkdocs-material",
     "mkdocstrings[python]",
     "mypy",
-    "nox",
     "pre-commit",
     "pytest",
     "pytest-cov",

src/df2img/main.py

@@ -1,12 +1,17 @@
 """Collection of functions to plot and save a `pd.DataFrame`."""
 
+from __future__ import annotations
+
 from math import floor
-from pathlib import Path
-from typing import Any
+from typing import TYPE_CHECKING, Any
 
-import pandas as pd
 import plotly
 
+if TYPE_CHECKING:
+    from pathlib import Path
+
+    import pandas as pd
+
 
 def plot_dataframe(
     df: pd.Series | pd.DataFrame,