Remove python 3 7 support (duartegroup#170)

* Remove support for Python v 3.7

.github/workflows/pytest.yml

@@ -11,7 +11,7 @@ jobs:
       fail-fast: true
       matrix:
         os: ["ubuntu-latest", "macos-latest"]
-        python-version: ["3.7", "3.8", "3.9"]
+        python-version: ["3.8", "3.9", "3.10"]
 
     defaults:
       run:

.github/workflows/pytest_cov.yml

@@ -11,8 +11,8 @@ jobs:
       fail-fast: true
       matrix:
         os: ["ubuntu-latest"]
-        python-version: ["3.7", "3.9"]   
-        
+        python-version: ["3.10"]
+
     defaults:
       run:
         shell: bash -l {0}

autode/calculations/output.py

@@ -2,7 +2,7 @@
 import autode.exceptions as ex
 
 from typing import Optional, List
-from autode.utils import cached_property
+from functools import cached_property
 from autode.log import logger
 
 

autode/hessians.py

@@ -4,10 +4,11 @@
 """
 import numpy as np
 import multiprocessing as mp
+
+from functools import cached_property
 from typing import List, Tuple, Iterator, Optional, Sequence, Union
 from autode.wrappers.keywords import Functional, GradientKeywords
 from autode.log import logger
-from autode.utils import cached_property
 from autode.config import Config
 from autode.constants import Constants
 from autode.values import ValueArray, Frequency, Coordinates

autode/utils.py

@@ -1,5 +1,4 @@
 import os
-import sys
 import shutil
 import warnings
 from time import time
@@ -26,30 +25,6 @@
     logger.warning('Multiprocessing context has already been defined')
 
 
-if sys.version_info.minor > 7:                                    # Python >3.7
-    from functools import cached_property # lgtm[py/unused-import]
-    # LGTM alert is suppressed as this is imported in Python >3.7
-
-if sys.version_info.minor <= 7:                                   # Python <3.7
-    # Define a cached_property equivalent decorator
-
-    class cached_property(object):
-        # Based on https://github.com/pydanny/cached-property/
-
-        def __init__(self, func):
-            self.__doc__ = func.__doc__
-            self.func = func
-
-        def cached_property_wrapper(self, obj, _cls):
-            if obj is None:
-                return self
-
-            value = obj.__dict__[self.func.__name__] = self.func(obj)
-            return value
-
-        __get__ = cached_property_wrapper
-
-
 def check_sufficient_memory(func: Callable):
     """Decorator to check that enough memory is available for a calculation"""
 

doc/changelog.rst

@@ -28,6 +28,7 @@ Usability improvements/Changes
 * Returns :code:`None` rather than rasies exceptions when calling the (deprecated) calculation get methods, to be consistent with ...get_energy
 * Adds an :code:`autode.wrappers.keywords` package to improve file structure
 * Removes any exceptions on calling :code:`.run()` on an optimiser instance where the system has no degrees of freedom
+* Removes support for Python < v3.8
 
 
 Functionality improvements

setup.py

@@ -21,6 +21,7 @@
 
 setup(name='autode',
       version='1.3.0',
+      python_requires='>3.7',
       packages=['autode',
                 'autode.conformers',
                 'autode.calculations',