DEPS: Drop Python 3.10

.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'
 

.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:

.github/workflows/unit-tests.yml

@@ -27,18 +27,18 @@ 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: ["1"]
         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"
@@ -50,7 +50,7 @@ jobs:
             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.
@@ -61,7 +61,7 @@ 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.
@@ -72,16 +72,16 @@ jobs:
             extra_loc: "zh_CN"
             platform: ubuntu-24.04
           - name: "PANDAS_FUTURE_INFER_STRING=0"
-            env_file: actions-312.yaml
+            env_file: actions-313.yaml
             pandas_future_infer_string: "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"
             platform: ubuntu-24.04
       fail-fast: false
@@ -183,7 +183,7 @@ 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) }}

.github/workflows/wheels.yml

@@ -101,7 +101,7 @@ jobs:
         - [macos-14, macosx_arm64]
         - [windows-2022, win_amd64]
         - [windows-11-arm, win_arm64]
-        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
@@ -110,8 +110,6 @@ 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"]

.pre-commit-config.yaml

@@ -45,7 +45,6 @@ repos:
     hooks:
     -   id: codespell
         types_or: [python, rst, markdown, cython, c]
-        additional_dependencies: [tomli]
 -   repo: https://github.com/MarcoGorelli/cython-lint
     rev: v0.16.7
     hooks:
@@ -77,7 +76,7 @@ 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:
@@ -235,7 +234,7 @@ repos:
         entry: python scripts/generate_pip_deps_from_conda.py
         files: ^(environment.yml|requirements-dev.txt)$
         pass_filenames: false
-        additional_dependencies: [tomli, pyyaml]
+        additional_dependencies: [pyyaml]
     -   id: title-capitalization
         name: Validate correct capitalization among titles in documentation
         entry: python scripts/validate_rst_title_capitalization.py
@@ -290,7 +289,7 @@ repos:
         entry: python -m scripts.validate_min_versions_in_sync
         language: python
         files: ^(ci/deps/actions-.*-minimum_versions\.yaml|pandas/compat/_optional\.py)$
-        additional_dependencies: [tomli, pyyaml]
+        additional_dependencies: [pyyaml]
         pass_filenames: false
     -   id: validate-errors-locations
         name: Validate errors locations

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

ci/deps/actions-310-minimum_versions.yaml → 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

ci/deps/actions-311-downstream_compat.yaml → 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

ci/deps/actions-311-numpydev.yaml → 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

ci/deps/actions-311-pyarrownightly.yaml → 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

ci/meta.yaml

@@ -31,7 +31,6 @@ requirements:
     - numpy >=1.21.6  # [py<311]
     - numpy >=1.23.2  # [py>=311]
     - versioneer
-    - tomli  # [py<311]
   run:
     - python
     - numpy >=1.21.6  # [py<311]
@@ -66,7 +65,6 @@ test:
     - pytest-xdist >=3.4.0
     - pytest-cov
     - hypothesis >=6.84.0
-    - tomli  # [py<311]
 
 about:
   home: http://pandas.pydata.org

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

doc/source/whatsnew/v3.0.0.rst

@@ -305,7 +305,7 @@ 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
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

environment.yml

@@ -122,5 +122,4 @@ dependencies:
   - pip:
       - adbc-driver-postgresql>=0.10.0
       - adbc-driver-sqlite>=0.8.0
-      - typing_extensions; python_version<"3.11"
       - tzdata>=2023.3

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) {

pandas/_libs/tslibs/dtypes.pyi

@@ -1,6 +1,5 @@
 from enum import Enum
-
-from pandas._typing import Self
+from typing import Self
 
 OFFSET_TO_PERIOD_FREQSTR: dict[str, str]
 

pandas/_testing/_warnings.py

@@ -16,8 +16,6 @@
 )
 import warnings
 
-from pandas.compat import PY311
-
 if TYPE_CHECKING:
     from collections.abc import (
         Generator,
@@ -216,7 +214,7 @@ def _assert_caught_no_extra_warnings(
                 # due to these open files.
                 if any("matplotlib" in mod for mod in sys.modules):
                     continue
-            if PY311 and actual_warning.category == EncodingWarning:
+            if actual_warning.category == EncodingWarning:
                 # EncodingWarnings are checked in the CI
                 # pyproject.toml errors on EncodingWarnings in pandas
                 # Ignore EncodingWarnings from other libraries

pandas/_typing.py

@@ -16,7 +16,6 @@
     tzinfo,
 )
 from os import PathLike
-import sys
 from typing import (
     TYPE_CHECKING,
     Any,
@@ -93,20 +92,10 @@
     from typing import TypeGuard  # pyright: ignore[reportUnusedImport]
 
     P = ParamSpec("P")
-
-    if sys.version_info >= (3, 11):
-        from typing import Self  # pyright: ignore[reportUnusedImport]
-        from typing import Unpack  # pyright: ignore[reportUnusedImport]
-    else:
-        from typing_extensions import Self  # pyright: ignore[reportUnusedImport]
-        from typing_extensions import Unpack  # pyright: ignore[reportUnusedImport]
-
 else:
     ParamSpec: Any = None
-    Self: Any = None
     TypeGuard: Any = None
     Concatenate: Any = None
-    Unpack: Any = None
 
 HashableT = TypeVar("HashableT", bound=Hashable)
 HashableT2 = TypeVar("HashableT2", bound=Hashable)

pandas/compat/__init__.py

@@ -18,7 +18,6 @@
 from pandas.compat._constants import (
     IS64,
     ISMUSL,
-    PY311,
     PY312,
     PYPY,
     WASM,
@@ -155,7 +154,6 @@ def is_ci_environment() -> bool:
     "HAS_PYARROW",
     "IS64",
     "ISMUSL",
-    "PY311",
     "PY312",
     "PYPY",
     "WASM",