Remove python 3.7 from supported versions

Author: rhpvorderman

.github/workflows/ci.yml

@@ -19,10 +19,10 @@ jobs:
       - uses: actions/[email protected]
         with:
           submodules: recursive
-      - name: Set up Python 3.7
+      - name: Set up Python 3.8
         uses: actions/[email protected]
         with:
-          python-version: 3.7
+          python-version: 3.8
       - name: Install tox
         run: pip install tox
       - name: Lint
@@ -39,10 +39,10 @@ jobs:
       - uses: actions/[email protected]
         with:
           submodules: recursive
-      - name: Set up Python 3.7
+      - name: Set up Python 3.8
         uses: actions/[email protected]
         with:
-          python-version: 3.7
+          python-version: 3.8
       - name: Install isal
         run: sudo apt-get install libisal-dev
       - name: Install tox and upgrade setuptools and pip
@@ -57,20 +57,18 @@ jobs:
     strategy:
       matrix:
         python-version:
-          - "3.7"
           - "3.8"
           - "3.9"
           - "3.10"
           - "3.11"
-          - "pypy-3.7"
           - "pypy-3.8"
           - "pypy-3.9"
         os: ["ubuntu-latest"]
         include:
           - os: "macos-latest"
-            python-version: 3.7
+            python-version: 3.8
           - os: "windows-latest"
-            python-version: 3.7
+            python-version: 3.8
     steps:
       - uses: actions/[email protected]
         with:
@@ -106,7 +104,7 @@ jobs:
     strategy:
       matrix:
         python_version:
-          - "3.7"
+          - "3.8"
     steps:
       - uses: actions/[email protected]
         with:

setup.py

@@ -158,7 +158,6 @@ def build_isa_l():
     classifiers=[
         "Programming Language :: Python :: 3 :: Only",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
@@ -173,6 +172,6 @@ def build_isa_l():
         "Operating System :: MacOS",
         "Operating System :: Microsoft :: Windows",
     ],
-    python_requires=">=3.7",  # We use METH_FASTCALL
+    python_requires=">=3.8",  # BadGzipFile imported
     ext_modules=EXTENSIONS
 )

src/isal/igzip.py

@@ -56,11 +56,7 @@
 FTEXT, FHCRC, FEXTRA, FNAME, FCOMMENT = 1, 2, 4, 8, 16
 READ, WRITE = 1, 2
 
-try:
-    BadGzipFile = gzip.BadGzipFile  # type: ignore
-except AttributeError:  # Versions lower than 3.8 do not have BadGzipFile
-    BadGzipFile = OSError  # type: ignore
-
+BadGzipFile = gzip.BadGzipFile  # type: ignore
 
 # The open method was copied from the CPython source with minor adjustments.
 def open(filename, mode="rb", compresslevel=_COMPRESS_LEVEL_TRADEOFF,