DEPS: Drop Python 3.10

mroeschke · mroeschke · commit 98217f610f86 · 2025-07-08T12:13:14.000-07:00
diff --git a/.github/workflows/code-checks.yml b/.github/workflows/code-checks.yml
@@ -177,7 +177,7 @@ jobs:
         id: setup_python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.10'
+          python-version: '3.11'
           cache: 'pip'
           cache-dependency-path: 'requirements-dev.txt'
 
diff --git a/.github/workflows/package-checks.yml b/.github/workflows/package-checks.yml
@@ -42,7 +42,7 @@ jobs:
         id: setup_python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.10'
+          python-version: '3.11'
 
       - name: Pip install with extra
         run: |
@@ -53,7 +53,7 @@ jobs:
     runs-on: ubuntu-24.04
     strategy:
       matrix:
-        python-version: ['3.10', '3.11']
+        python-version: ['3.11', '3.12']
       fail-fast: false
     name: Test Conda Forge Recipe - Python ${{ matrix.python-version }}
     concurrency:
diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
@@ -27,26 +27,26 @@ jobs:
     strategy:
       matrix:
         platform: [ubuntu-24.04, ubuntu-24.04-arm]
-        env_file: [actions-310.yaml, actions-311.yaml, actions-312.yaml, actions-313.yaml]
+        env_file: [actions-311.yaml, actions-312.yaml, actions-313.yaml]
         # Prevent the include jobs from overriding other jobs
         pattern: [""]
         pandas_future_infer_string: ["0"]
         include:
           - name: "Downstream Compat"
-            env_file: actions-311-downstream_compat.yaml
+            env_file: actions-313-downstream_compat.yaml
             pattern: "not slow and not network and not single_cpu"
             pytest_target: "pandas/tests/test_downstream.py"
             platform: ubuntu-24.04
           - name: "Minimum Versions"
-            env_file: actions-310-minimum_versions.yaml
+            env_file: actions-311-minimum_versions.yaml
             pattern: "not slow and not network and not single_cpu"
             platform: ubuntu-24.04
           - name: "Freethreading"
             env_file: actions-313-freethreading.yaml
             pattern: "not slow and not network and not single_cpu"
             platform: ubuntu-24.04
           - name: "Locale: it_IT"
-            env_file: actions-311.yaml
+            env_file: actions-313.yaml
             pattern: "not slow and not network and not single_cpu"
             extra_apt: "language-pack-it"
             # Use the utf8 version as the default, it has no bad side-effect.
@@ -57,7 +57,7 @@ jobs:
             extra_loc: "it_IT"
             platform: ubuntu-24.04
           - name: "Locale: zh_CN"
-            env_file: actions-311.yaml
+            env_file: actions-313.yaml
             pattern: "not slow and not network and not single_cpu"
             extra_apt: "language-pack-zh-hans"
             # Use the utf8 version as the default, it has no bad side-effect.
@@ -68,11 +68,11 @@ jobs:
             extra_loc: "zh_CN"
             platform: ubuntu-24.04
           - name: "Future infer strings"
-            env_file: actions-312.yaml
+            env_file: actions-313.yaml
             pandas_future_infer_string: "1"
             platform: ubuntu-24.04
           - name: "Future infer strings (without pyarrow)"
-            env_file: actions-311.yaml
+            env_file: actions-313.yaml
             pandas_future_infer_string: "1"
             platform: ubuntu-24.04
           - name: "Pypy"
@@ -81,12 +81,12 @@ jobs:
             test_args: "--max-worker-restart 0"
             platform: ubuntu-24.04
           - name: "Numpy Dev"
-            env_file: actions-311-numpydev.yaml
+            env_file: actions-313-numpydev.yaml
             pattern: "not slow and not network and not single_cpu"
             test_args: "-W error::DeprecationWarning -W error::FutureWarning"
             platform: ubuntu-24.04
           - name: "Pyarrow Nightly"
-            env_file: actions-311-pyarrownightly.yaml
+            env_file: actions-313-pyarrownightly.yaml
             pattern: "not slow and not network and not single_cpu"
             pandas_future_infer_string: "1"
             platform: ubuntu-24.04
@@ -192,7 +192,7 @@ jobs:
       matrix:
         # Note: Don't use macOS latest since macos 14 appears to be arm64 only
         os: [macos-13, macos-14, windows-latest]
-        env_file: [actions-310.yaml, actions-311.yaml, actions-312.yaml, actions-313.yaml]
+        env_file: [actions-311.yaml, actions-312.yaml, actions-313.yaml]
       fail-fast: false
     runs-on: ${{ matrix.os }}
     name: ${{ format('{0} {1}', matrix.os, matrix.env_file) }}
diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
@@ -102,7 +102,7 @@ jobs:
         - [windows-2022, win_amd64]
         - [windows-11-arm, win_arm64]
         # TODO: support PyPy?
-        python: [["cp310", "3.10"], ["cp311", "3.11"], ["cp312", "3.12"], ["cp313", "3.13"], ["cp313t", "3.13"]]
+        python: [["cp311", "3.11"], ["cp312", "3.12"], ["cp313", "3.13"], ["cp313t", "3.13"]]
         include:
         # Build Pyodide wheels and upload them to Anaconda.org
         # NOTE: this job is similar to the one in unit-tests.yml except for the fact
@@ -111,8 +111,6 @@ jobs:
           python: ["cp312", "3.12"]
           cibw_build_frontend: 'build'
         exclude:
-          - buildplat: [windows-11-arm, win_arm64]
-            python: ["cp310", "3.10"]
         # BackendUnavailable: Cannot import 'mesonpy'
           - buildplat: [windows-11-arm, win_arm64]
             python: ["cp313t", "3.13"]
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
@@ -77,7 +77,7 @@ repos:
     rev: v3.20.0
     hooks:
     -   id: pyupgrade
-        args: [--py310-plus]
+        args: [--py311-plus]
 -   repo: https://github.com/pre-commit/pygrep-hooks
     rev: v1.10.0
     hooks:
diff --git a/asv_bench/asv.conf.json b/asv_bench/asv.conf.json
@@ -29,7 +29,7 @@
 
     // The Pythons you'd like to test against.  If not provided, defaults
     // to the current version of Python used to run `asv`.
-    "pythons": ["3.10"],
+    "pythons": ["3.11"],
 
     // The matrix of dependencies to test.  Each key is the name of a
     // package (in PyPI) and the values are version numbers.  An empty
diff --git a/ci/deps/actions-310.yaml b/ci/deps/actions-310.yaml
diff --git a/ci/deps/actions-311-minimum_versions.yaml b/ci/deps/actions-311-minimum_versions.yaml
@@ -4,7 +4,7 @@ name: pandas-dev
 channels:
   - conda-forge
 dependencies:
-  - python=3.10
+  - python=3.11
 
   # build dependencies
   - versioneer
diff --git a/ci/deps/actions-313-downstream_compat.yaml b/ci/deps/actions-313-downstream_compat.yaml
@@ -3,7 +3,7 @@ name: pandas-dev
 channels:
   - conda-forge
 dependencies:
-  - python=3.11
+  - python=3.13
 
   # build dependencies
   - versioneer
diff --git a/ci/deps/actions-313-numpydev.yaml b/ci/deps/actions-313-numpydev.yaml
@@ -2,7 +2,7 @@ name: pandas-dev
 channels:
   - conda-forge
 dependencies:
-  - python=3.11
+  - python=3.13
 
   # build dependencies
   - versioneer
diff --git a/ci/deps/actions-313-pyarrownightly.yaml b/ci/deps/actions-313-pyarrownightly.yaml
@@ -2,7 +2,7 @@ name: pandas-dev
 channels:
   - conda-forge
 dependencies:
-  - python=3.11
+  - python=3.13
 
   # build dependencies
   - versioneer
diff --git a/doc/source/development/contributing_environment.rst b/doc/source/development/contributing_environment.rst
@@ -133,7 +133,7 @@ Consult the docs for setting up pyenv `here <https://github.com/pyenv/pyenv>`__.
    pyenv virtualenv <version> <name-to-give-it>
 
    # For instance:
-   pyenv virtualenv 3.10 pandas-dev
+   pyenv virtualenv 3.11 pandas-dev
 
    # Activate the virtualenv
    pyenv activate pandas-dev
diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
@@ -302,7 +302,7 @@ This change also applies to :meth:`.DataFrameGroupBy.value_counts`. Here, there
 Increased minimum version for Python
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-pandas 3.0.0 supports Python 3.10 and higher.
+pandas 3.0.0 supports Python 3.11 and higher.
 
 Increased minimum versions for dependencies
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/pandas/_libs/include/pandas/vendored/klib/khash_python.h b/pandas/_libs/include/pandas/vendored/klib/khash_python.h
@@ -222,15 +222,11 @@ static inline int pyobject_cmp(PyObject *a, PyObject *b) {
 }
 
 static inline Py_hash_t _Pandas_HashDouble(double val) {
-  // Since Python3.10, nan is no longer has hash 0
+  // nan no longer has hash 0
   if (isnan(val)) {
     return 0;
   }
-#if PY_VERSION_HEX < 0x030A0000
-  return _Py_HashDouble(val);
-#else
   return _Py_HashDouble(NULL, val);
-#endif
 }
 
 static inline Py_hash_t floatobject_hash(PyFloatObject *key) {
diff --git a/pandas/compat/_optional.py b/pandas/compat/_optional.py
@@ -16,7 +16,7 @@
 if TYPE_CHECKING:
     import types
 
-# Update install.rst, actions-310-minimum_versions.yaml,
+# Update install.rst, actions-311-minimum_versions.yaml,
 # deps_minimum.toml & pyproject.toml when updating versions!
 
 VERSIONS = {
diff --git a/pandas/core/dtypes/base.py b/pandas/core/dtypes/base.py
@@ -146,7 +146,7 @@ def __eq__(self, other: object) -> bool:
         return False
 
     def __hash__(self) -> int:
-        # for python>=3.10, different nan objects have different hashes
+        # different nan objects have different hashes
         # we need to avoid that and thus use hash function with old behavior
         return object_hash(tuple(getattr(self, attr) for attr in self._metadata))
 
diff --git a/pandas/tests/test_downstream.py b/pandas/tests/test_downstream.py
@@ -269,13 +269,10 @@ def test_from_obscure_array(dtype, box):
     else:
         data = box(arr)
 
-    if not isinstance(data, memoryview):
-        # FIXME(GH#44431) these raise on memoryview and attempted fix
-        #  fails on py3.10
-        func = {"M8[ns]": pd.to_datetime, "m8[ns]": pd.to_timedelta}[dtype]
-        result = func(arr).array
-        expected = func(data).array
-        tm.assert_equal(result, expected)
+    func = {"M8[ns]": pd.to_datetime, "m8[ns]": pd.to_timedelta}[dtype]
+    result = func(arr).array
+    expected = func(data).array
+    tm.assert_equal(result, expected)
 
     # Let's check the Indexes while we're here
     idx_cls = {"M8[ns]": DatetimeIndex, "m8[ns]": TimedeltaIndex}[dtype]
diff --git a/pyproject.toml b/pyproject.toml
@@ -25,7 +25,7 @@ authors = [
   { name = 'The Pandas Development Team', email='pandas-dev@python.org' },
 ]
 license = {file = 'LICENSE'}
-requires-python = '>=3.10'
+requires-python = '>=3.11'
 dependencies = [
   "numpy>=1.26.0",
   "python-dateutil>=2.8.2",
@@ -41,7 +41,6 @@ classifiers = [
     'Programming Language :: Python',
     'Programming Language :: Python :: 3',
     'Programming Language :: Python :: 3 :: Only',
-    'Programming Language :: Python :: 3.10',
     'Programming Language :: Python :: 3.11',
     'Programming Language :: Python :: 3.12',
     'Programming Language :: Python :: 3.13',
@@ -197,7 +196,7 @@ test-command = """
 
 [tool.ruff]
 line-length = 88
-target-version = "py310"
+target-version = "py311"
 fix = true
 
 [tool.ruff.lint]
@@ -275,8 +274,6 @@ ignore = [
   "B015",
   # Function definition does not bind loop variable
   "B023",
-  # Only works with python >=3.10
-  "B905",
   # Too many arguments to function call
   "PLR0913",
   # Too many returns
@@ -329,7 +326,7 @@ ignore = [
   "PLR0124",
   # collection-literal-concatenation
   "RUF005",
-  # pairwise-over-zipped (>=PY310 only)
+  # pairwise-over-zipped
   "RUF007",
   # mutable-class-default
   "RUF012",
@@ -391,6 +388,8 @@ ignore = [
   "PLW0603",
   # runtime-cast-value
   "TC006",
+  # zip-without-explicit-strict
+  "B905",
 ]
 
 exclude = [
diff --git a/scripts/tests/data/deps_minimum.toml b/scripts/tests/data/deps_minimum.toml
@@ -39,7 +39,6 @@ classifiers = [
     'Programming Language :: Python',
     'Programming Language :: Python :: 3',
     'Programming Language :: Python :: 3 :: Only',
-    'Programming Language :: Python :: 3.10',
     'Programming Language :: Python :: 3.11',
     'Topic :: Scientific/Engineering'
 ]
