7908 drop python 3.8 (#7909)

Fix #7908

### Types of changes
<!--- Put an `x` in all the boxes that apply, and remove the not
applicable items -->
- [x] Non-breaking change (fix or new feature that would not break
existing functionality).
- [ ] Breaking change (fix or new feature that would cause existing
functionality to change).
- [ ] New tests added to cover the changes.
- [ ] Integration tests passed locally by running `./runtests.sh -f -u
--net --coverage`.
- [ ] Quick tests passed locally by running `./runtests.sh --quick
--unittests --disttests`.
- [ ] In-line docstrings updated.
- [ ] Documentation updated, tested `make html` command in the `docs/`
folder.

Signed-off-by: YunLiu <[email protected]>

Author: KumoLiu

.github/workflows/cron-ngc-bundle.yml

@@ -18,10 +18,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - name: Set up Python 3.8
+    - name: Set up Python 3.9
       uses: actions/setup-python@v5
       with:
-        python-version: '3.8'
+        python-version: '3.9'
     - name: cache weekly timestamp
       id: pip-cache
       run: echo "datew=$(date '+%Y-%V')" >> $GITHUB_OUTPUT

.github/workflows/pythonapp-gpu.yml

@@ -62,7 +62,7 @@ jobs:
         if [ ${{ matrix.environment }} = "PT110+CUDA111" ] || \
           [ ${{ matrix.environment }} = "PT113+CUDA116" ]
         then
-        PYVER=3.8 PYSFX=3 DISTUTILS=python3-distutils && \
+        PYVER=3.9 PYSFX=3 DISTUTILS=python3-distutils && \
         apt-get update && apt-get install -y --no-install-recommends \
           curl \
           pkg-config \

.github/workflows/pythonapp-min.yml

@@ -31,10 +31,10 @@ jobs:
     timeout-minutes: 40
     steps:
     - uses: actions/checkout@v4
-    - name: Set up Python 3.8
+    - name: Set up Python 3.9
       uses: actions/setup-python@v5
       with:
-        python-version: '3.8'
+        python-version: '3.9'
     - name: Prepare pip wheel
       run: |
         which python
@@ -73,7 +73,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11', '3.12']
     timeout-minutes: 40
     steps:
     - uses: actions/checkout@v4
@@ -118,14 +118,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        pytorch-version: ['1.9.1', '1.10.2', '1.11.0', '1.12.1', '1.13', 'latest']
+        pytorch-version: ['1.10.2', '1.11.0', '1.12.1', '1.13', '2.0.1', 'latest']
     timeout-minutes: 40
     steps:
     - uses: actions/checkout@v4
-    - name: Set up Python 3.8
+    - name: Set up Python 3.9
       uses: actions/setup-python@v5
       with:
-        python-version: '3.8'
+        python-version: '3.9'
     - name: Prepare pip wheel
       run: |
         which python

.github/workflows/setupapp.yml

@@ -77,7 +77,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.8', '3.9', '3.10']
+        python-version: ['3.9', '3.10', '3.11']
     steps:
     - uses: actions/checkout@v4
       with:
@@ -119,10 +119,10 @@ jobs:
   install:  # pip install from github url, the default branch is dev
     runs-on: ubuntu-latest
     steps:
-    - name: Set up Python 3.8
+    - name: Set up Python 3.9
       uses: actions/setup-python@v5
       with:
-        python-version: '3.8'
+        python-version: '3.9'
     - name: cache weekly timestamp
       id: pip-cache
       run: |

CONTRIBUTING.md

@@ -123,7 +123,7 @@ or (for new features that would not break existing functionality):
 ```
 
 It is recommended that the new test `test_[module_name].py` is constructed by using only
-python 3.8+ build-in functions, `torch`, `numpy`, `coverage` (for reporting code coverages) and `parameterized` (for organising test cases) packages.
+python 3.9+ build-in functions, `torch`, `numpy`, `coverage` (for reporting code coverages) and `parameterized` (for organising test cases) packages.
 If it requires any other external packages, please make sure:
 - the packages are listed in [`requirements-dev.txt`](requirements-dev.txt)
 - the new test `test_[module_name].py` is added to the `exclude_cases` in [`./tests/min_tests.py`](./tests/min_tests.py) so that

docs/images/python.svg

@@ -19,7 +19,7 @@
 
 ---
 
-MONAI's core functionality is written in Python 3 (>= 3.8) and only requires [Numpy](https://numpy.org/) and [Pytorch](https://pytorch.org/).
+MONAI's core functionality is written in Python 3 (>= 3.9) and only requires [Numpy](https://numpy.org/) and [Pytorch](https://pytorch.org/).
 
 The package is currently distributed via Github as the primary source code repository,
 and the Python package index (PyPI). The pre-built Docker images are made available on DockerHub.

docs/source/installation.md

@@ -17,7 +17,7 @@
 from ._version import get_versions
 
 PY_REQUIRED_MAJOR = 3
-PY_REQUIRED_MINOR = 8
+PY_REQUIRED_MINOR = 9
 
 version_dict = get_versions()
 __version__: str = version_dict.get("version", "0+unknown")

monai/__init__.py

@@ -551,7 +551,7 @@ def set_device_info(
             cmd_prefix: command line prefix for subprocess running in BundleAlgo and EnsembleRunner.
                 Default using env "CMD_PREFIX" or None, examples are:
 
-                    - single GPU/CPU or multinode bcprun: "python " or "/opt/conda/bin/python3.8 ",
+                    - single GPU/CPU or multinode bcprun: "python " or "/opt/conda/bin/python3.9 ",
                     - single node multi-GPU running "torchrun --nnodes=1 --nproc_per_node=2 "
 
                 If user define this prefix, please make sure --nproc_per_node matches cuda_visible_device or

monai/apps/auto3dseg/auto_runner.py

@@ -407,7 +407,7 @@ def _prepare_cmd_default(cmd: str, cmd_prefix: str | None = None, **kwargs: Any)
 
     Args:
         cmd: the command or script to run in the distributed job.
-        cmd_prefix: the command prefix to run the script, e.g., "python", "python -m", "python3", "/opt/conda/bin/python3.8 ".
+        cmd_prefix: the command prefix to run the script, e.g., "python", "python -m", "python3", "/opt/conda/bin/python3.9 ".
         kwargs: the keyword arguments to be passed to the script.
 
     Returns: