Drop Python 3.7 (#825)

Author: Ashley Scillitoe

.github/workflows/ci.yml

@@ -34,7 +34,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        python-version: [ '3.7', '3.8', '3.9', '3.10', '3.11']
+        python-version: [ '3.8', '3.9', '3.10', '3.11']
         include: # Run macos and windows tests on only one python version
           - os: windows-latest
             python-version: '3.9'  # PyTorch doesn't yet have 3.10 support on Windows (https://pytorch.org/get-started/locally/#windows-python)

.github/workflows/test_all_notebooks.yml

@@ -20,7 +20,7 @@ jobs:
       fail-fast: false  # Continue to run other builds despite a failure
       matrix:
         os: [ ubuntu-latest ]
-        python-version: [ '3.7', '3.8', '3.9', '3.10' ]
+        python-version: [ '3.8', '3.9', '3.10' ]
         include: # Run macos and windows tests on only one python version
           - os: windows-latest
             python-version: '3.9'  # PyTorch doesn't yet have 3.10 support on Windows (https://pytorch.org/get-started/locally/#windows-python)

.github/workflows/test_changed_notebooks.yml

@@ -27,7 +27,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        python-version: [ '3.7', '3.8', '3.9', '3.10' ]
+        python-version: [ '3.8', '3.9', '3.10' ]
         include: # Run macos and windows tests on only one python version
           - os: windows-latest
             python-version: '3.9'  # PyTorch doesn't yet have 3.10 support on Windows (https://pytorch.org/get-started/locally/#windows-python)

setup.py

@@ -46,7 +46,7 @@ def readme():
     license="Apache 2.0",
     packages=find_packages(),
     include_package_data=True,
-    python_requires=">=3.7",
+    python_requires=">=3.8",
     # lower bounds based on Debian Stable versions where available
     install_requires=[
         "matplotlib>=3.0.0, <4.0.0",
@@ -74,7 +74,6 @@ def readme():
         "Intended Audience :: Science/Research",
         "Operating System :: OS Independent",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",