Make script run on python 3.7

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project tries to adhere to [Semantic Versioning](https://semver.org/spe
 
 ## [Unreleased]
 
+### Changed
+
+* Compatible with Python stretching back to version 3.7
+
 ## [0.4] - 2021-12-06
 
 ### Added 

poetry.lock

@@ -30,6 +30,7 @@ python-versions = ">=3.6"
 
 [package.dependencies]
 colorama = {version = "*", markers = "platform_system == \"Windows\""}
+importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
 
 [[package]]
 name = "colorama"
@@ -53,6 +54,21 @@ tomli = {version = "*", optional = true, markers = "extra == \"toml\""}
 [package.extras]
 toml = ["tomli"]
 
+[[package]]
+name = "importlib-metadata"
+version = "0.23"
+description = "Read metadata from Python packages"
+category = "main"
+optional = false
+python-versions = ">=2.7,!=3.0,!=3.1,!=3.2,!=3.3"
+
+[package.dependencies]
+zipp = ">=0.5"
+
+[package.extras]
+docs = ["sphinx", "rst.linker"]
+testing = ["packaging", "importlib-resources"]
+
 [[package]]
 name = "iniconfig"
 version = "1.1.1"
@@ -80,6 +96,9 @@ category = "dev"
 optional = false
 python-versions = ">=3.6"
 
+[package.dependencies]
+importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
+
 [package.extras]
 dev = ["pre-commit", "tox"]
 testing = ["pytest", "pytest-benchmark"]
@@ -115,6 +134,7 @@ python-versions = ">=3.6"
 atomicwrites = {version = ">=1.0", markers = "sys_platform == \"win32\""}
 attrs = ">=19.2.0"
 colorama = {version = "*", markers = "sys_platform == \"win32\""}
+importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
 iniconfig = "*"
 packaging = "*"
 pluggy = ">=0.12,<2.0"
@@ -163,16 +183,28 @@ python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
 
 [[package]]
 name = "tomli"
-version = "1.2.2"
+version = "2.0.0"
 description = "A lil' TOML parser"
 category = "dev"
 optional = false
+python-versions = ">=3.7"
+
+[[package]]
+name = "zipp"
+version = "3.6.0"
+description = "Backport of pathlib-compatible object wrapper for zip files"
+category = "main"
+optional = false
 python-versions = ">=3.6"
 
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
+testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "jaraco.itertools", "func-timeout", "pytest-black (>=0.3.7)", "pytest-mypy"]
+
 [metadata]
 lock-version = "1.1"
-python-versions = "^3.9"
+python-versions = "^3.7"
-content-hash = "3018d9e058177fcc4d085739d8dad7a04716ccf3a0e87a22e148960a146ca85b"
+content-hash = "fec236ab912efe582781c62e4cd2c4cd7e609557e284e067fa875f30ab806d93"
 
 [metadata.files]
 atomicwrites = [
@@ -240,6 +272,10 @@ coverage = [
     {file = "coverage-6.2-pp36.pp37.pp38-none-any.whl", hash = "sha256:5829192582c0ec8ca4a2532407bc14c2f338d9878a10442f5d03804a95fac9de"},
     {file = "coverage-6.2.tar.gz", hash = "sha256:e2cad8093172b7d1595b4ad66f24270808658e11acf43a8f95b41276162eb5b8"},
 ]
+importlib-metadata = [
+    {file = "importlib_metadata-0.23-py2.py3-none-any.whl", hash = "sha256:d5f18a79777f3aa179c145737780282e27b508fc8fd688cb17c7a813e8bd39af"},
+    {file = "importlib_metadata-0.23.tar.gz", hash = "sha256:aa18d7378b00b40847790e7c27e11673d7fed219354109d0e7b9e5b25dc3ad26"},
+]
 iniconfig = [
     {file = "iniconfig-1.1.1-py2.py3-none-any.whl", hash = "sha256:011e24c64b7f47f6ebd835bb12a743f2fbe9a26d4cecaa7f53bc4f35ee9da8b3"},
     {file = "iniconfig-1.1.1.tar.gz", hash = "sha256:bc3af051d7d14b2ee5ef9969666def0cd1a000e121eaea580d4a313df4b37f32"},
@@ -277,6 +313,10 @@ toml = [
     {file = "toml-0.10.2.tar.gz", hash = "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"},
 ]
 tomli = [
-    {file = "tomli-1.2.2-py3-none-any.whl", hash = "sha256:f04066f68f5554911363063a30b108d2b5a5b1a010aa8b6132af78489fe3aade"},
+    {file = "tomli-2.0.0-py3-none-any.whl", hash = "sha256:b5bde28da1fed24b9bd1d4d2b8cba62300bfb4ec9a6187a957e8ddb9434c5224"},
-    {file = "tomli-1.2.2.tar.gz", hash = "sha256:c6ce0015eb38820eaf32b5db832dbc26deb3dd427bd5f6556cf0acac2c214fee"},
+    {file = "tomli-2.0.0.tar.gz", hash = "sha256:c292c34f58502a1eb2bbb9f5bbc9a5ebc37bee10ffb8c2d6bbdfa8eb13cc14e1"},
+]
+zipp = [
+    {file = "zipp-3.6.0-py3-none-any.whl", hash = "sha256:9fe5ea21568a0a70e50f273397638d39b03353731e6cbbb3fd8502a33fec40bc"},
+    {file = "zipp-3.6.0.tar.gz", hash = "sha256:71c644c5369f4a6e07636f0aa966270449561fcea2e3d6747b8d23efaa9d7832"},
 ]

pyproject.toml

@@ -8,13 +8,14 @@ packages = [
 ]
 
 [tool.poetry.dependencies]
-importlib-metadata = {version = "^1.0", python = "<3.8"}
+importlib-metadata = {version = "^0.23", python = "<3.8"}
-python = "^3.9"
+python = "^3.7"
 click = "^8.0"
 
 [tool.poetry.dev-dependencies]
 pytest = "^6.2"
 coverage = {extras = ["toml"], version = "^6.2"}
+
 pytest-cov = "^3.0.0"
 pytest-mock = "^3.6.1"
 

src/habitmove/__init__.py

@@ -1,9 +1,9 @@
 # init.py
 import sys
 
-if sys.version_info >= (3, 8):
+try:
     from importlib.metadata import version as metadata_version
-else:
+except ImportError:
     from importlib_metadata import version as metadata_version
 
 __version__ = str(metadata_version(__name__))

src/habitmove/habits.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import sqlite3
 
 from habitmove.nomiedata import Tracker

src/habitmove/nomiedata.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from typing import Any, Union
 from dataclasses import dataclass, field
 import re

src/habitmove/repetitions.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import sqlite3
 from typing import Optional
 from datetime import datetime

src/habitmove/schema.py

@@ -1,7 +1,7 @@
 import sqlite3
 
 
-def create_database(name):
+def create_database(db_file: str) -> sqlite3.Connection:
     """create a database connection to the SQLite database
         specified by db_file
     :param db_file: database file
@@ -9,13 +9,11 @@ def create_database(name):
     """
     conn = None
     try:
-        conn = sqlite3.connect(name)
+        conn = sqlite3.connect(db_file)
         return conn
     except sqlite3.Error as e:
         print(e)
 
-    return conn
-
 
 def create_tables(db):
     c = db.cursor()