Remove Python 3.9 support

.github/copilot-instructions.md

@@ -5,7 +5,7 @@
 **nipanel** is a Python package that provides support for creating and controlling measurement and visualization panels. It's developed by NI and enables Python applications to create Streamlit-based panels that can be served and controlled via gRPC services.
 
 ### Key Repository Information
-- **Language**: Python (3.9+)
+- **Language**: Python (3.10+)
 - **Package Manager**: Poetry 2.1+
 - **Framework**: Uses Streamlit for panel UI, gRPC for communication
 - **Size**: Medium-sized repository (~1300 lines of code in src/)
@@ -64,7 +64,7 @@ poetry run sphinx-build docs docs/_build --builder html --fail-on-warning
 ```
 
 ### Runtime Requirements
-- **Python**: 3.9+ (excludes 3.9.7 due to Streamlit incompatibility)
+- **Python**: 3.10+
 - **Poetry**: 2.1+ required for build system
 - **Virtual Environment**: Configured in-project (`.venv/` directory)
 
@@ -114,12 +114,12 @@ examples/
 
 The repository uses a comprehensive GitHub Actions pipeline:
 
-1. **check_nipanel.yml**: Runs on Windows, Ubuntu, macOS with Python 3.9, 3.13
+1. **check_nipanel.yml**: Runs on Windows, Ubuntu, macOS with Python 3.10, 3.13
    - Linting with `poetry run nps lint`
    - Type checking with `poetry run mypy`
    - Security scanning with `poetry run bandit -c pyproject.toml -r src/nipanel`
 
-2. **run_unit_tests.yml**: Cross-platform testing (Windows, Ubuntu) with Python 3.9-3.13
+2. **run_unit_tests.yml**: Cross-platform testing (Windows, Ubuntu) with Python 3.10-3.13
    - Unit tests: `poetry run pytest ./tests/unit -v --cov=nipanel --junitxml=test_results/nipanel-{os}-py{version}.xml`
 
 3. **check_docs.yml**: Documentation validation
@@ -163,7 +163,6 @@ poetry run pytest -v
 1. **Poetry Lock Issues**: Run `poetry check --lock` to verify lock file consistency
 2. **Import Warnings**: flake8_import_order pkg_resources warnings are expected and harmless
 3. **Documentation SSL Errors**: External inventory fetch failures are known issues
-4. **Python 3.9.7**: Excluded due to Streamlit incompatibility - use different Python 3.9.x version
 
 ### File System Requirements
 - Virtual environment created in `.venv/` (configured in poetry.toml)

.github/workflows/check_nipanel.yml

@@ -10,7 +10,7 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest, ubuntu-latest, macos-latest]
-        python-version: [3.9, 3.13]
+        python-version: ["3.10", 3.13]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Check out repo
@@ -27,4 +27,4 @@ jobs:
         with:
           install-args: "--with examples"
       - name: Bandit security checks
-        run:  poetry run bandit -c pyproject.toml -r src/nipanel
+        run: poetry run bandit -c pyproject.toml -r src/nipanel

.github/workflows/run_unit_tests.yml

@@ -11,7 +11,7 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest, ubuntu-latest]
-        python-version: [3.9, '3.10', 3.11, 3.12, 3.13]
+        python-version: ["3.10", 3.11, 3.12, 3.13]
       # Fail-fast skews the pass/fail ratio and seems to make pytest produce
       # incomplete JUnit XML results.
       fail-fast: false

README.md

@@ -4,6 +4,7 @@
 - [About](#about)
   - [Operating System Support](#operating-system-support)
   - [Python Version Support](#python-version-support)
+  - [Installation](#installation)
 
 # About
 
@@ -17,7 +18,7 @@ NI created and supports this package.
 
 ## Python Version Support
 
-`nipanel` supports CPython 3.9+.
+`nipanel` supports CPython 3.10+.
 
 ## Installation
 

examples/all_types/README.md

@@ -8,7 +8,7 @@ This is an example for `nipanel` that demonstrates all supported data types.
 
 ### Required Software
 
-- Python 3.9 or later
+- Python 3.10 or later
 
 ### Usage
 

examples/hello/README.md

@@ -8,7 +8,7 @@ This is a simple `nipanel` example that displays a Streamlit app.
 
 ### Required Software
 
-- Python 3.9 or later
+- Python 3.10 or later
 
 ### Usage
 

examples/nidaqmx/nidaqmx_analog_input_filtering/README.md

@@ -12,7 +12,7 @@ Script demonstrates analog input data getting continuously acquired, and being f
 
 ### Required Software
 
-- Python 3.9 or later
+- Python 3.10 or later
 
 ### Usage
 

examples/nidaqmx/nidaqmx_analog_output_voltage/README.md

@@ -12,7 +12,7 @@ This is a nipanel example that displays an interactive Streamlit app and updates
 
 ### Required Software
 
-- Python 3.9 or later
+- Python 3.10 or later
 
 ### Usage
 

examples/nidaqmx/nidaqmx_continuous_analog_input/README.md

@@ -12,7 +12,7 @@ This is a nipanel example that displays an interactive Streamlit app and updates
 
 ### Required Software
 
-- Python 3.9 or later
+- Python 3.10 or later
 
 ### Usage
 

examples/niscope/nicope_ex_fetch_forever/README.md

@@ -13,7 +13,7 @@ Script demonstrates NIScope waveform data getting continuously acquired.
 
 ### Required Software
 
-- Python 3.9 or later
+- Python 3.10 or later
 
 ### Usage
 

examples/niscope/niscope_binary_acquisition/README.md

@@ -13,7 +13,7 @@ Script demonstrates waveform data getting continuously acquired and being conver
 
 ### Required Software
 
-- Python 3.9 or later
+- Python 3.10 or later
 
 ### Usage
 

examples/niscope/niscope_configured_acquisition/README.md

@@ -13,7 +13,7 @@ Script demonstrates how to configure vertical, horizontal, and triggering proper
 
 ### Required Software
 
-- Python 3.9 or later
+- Python 3.10 or later
 
 ### Usage
 

examples/performance_checker/README.md

@@ -11,7 +11,7 @@ This example measures the performance of a streamlit panel with a graph.
 
 ### Required Software
 
-- Python 3.9 or later
+- Python 3.10 or later
 
 ### Usage
 

examples/simple_graph/README.md

@@ -11,7 +11,7 @@ This example demonstrates using `nipanel` with Streamlit to display a dynamic si
 
 ### Required Software
 
-- Python 3.9 or later
+- Python 3.10 or later
 
 ### Usage