Update python min version to 3.9 (#1043)

* 3.8 -> 3.9

* upgrade pyo3 abi3-py38 -> abi3-py39

Author: kevinjqliu

Cargo.toml

@@ -35,7 +35,7 @@ substrait = ["dep:datafusion-substrait"]
 
 [dependencies]
 tokio = { version = "1.42", features = ["macros", "rt", "rt-multi-thread", "sync"] }
-pyo3 = { version = "0.23", features = ["extension-module", "abi3", "abi3-py38"] }
+pyo3 = { version = "0.23", features = ["extension-module", "abi3", "abi3-py39"] }
 pyo3-async-runtimes = { version = "0.23", features = ["tokio-runtime"]}
 arrow = { version = "54", features = ["pyarrow"] }
 datafusion = { version = "45.0.0", features = ["avro", "unicode_expressions"] }

docs/source/contributor-guide/introduction.rst

@@ -118,7 +118,7 @@ be ignored by ``git``.
 .. code-block::
 
     implementation=CPython
-    version=3.8
+    version=3.9
     shared=true
     abi3=true
     lib_name=python3.12

examples/ffi-table-provider/Cargo.lock

@@ -23,7 +23,7 @@ edition = "2021"
 [dependencies]
 datafusion = { version = "45.0.0" }
 datafusion-ffi = { version = "45.0.0" }
-pyo3 = { version = "0.23", features = ["extension-module", "abi3", "abi3-py38"] }
+pyo3 = { version = "0.23", features = ["extension-module", "abi3", "abi3-py39"] }
 arrow = { version = "54" }
 arrow-array = { version = "54" }
 arrow-schema = { version = "54" }

examples/ffi-table-provider/Cargo.toml

@@ -21,7 +21,7 @@ build-backend = "maturin"
 
 [project]
 name = "ffi_table_provider"
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 classifiers = [
     "Programming Language :: Rust",
     "Programming Language :: Python :: Implementation :: CPython",

examples/ffi-table-provider/pyproject.toml

@@ -24,7 +24,7 @@ name = "datafusion"
 description = "Build and run queries against data"
 readme = "README.md"
 license = { file = "LICENSE.txt" }
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 keywords = ["datafusion", "dataframe", "rust", "query-engine"]
 classifiers = [
     "Development Status :: 2 - Pre-Alpha",
@@ -35,7 +35,6 @@ classifiers = [
     "Operating System :: Microsoft :: Windows",
     "Operating System :: POSIX :: Linux",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",