feat: drop Python 3.6 support

shared/libretime_shared/datetime.py

@@ -1,4 +1,4 @@
-from datetime import datetime, time
+from datetime import time
 
 
 def time_in_seconds(value: time) -> float:
@@ -12,16 +12,3 @@ def time_in_seconds(value: time) -> float:
 
 def time_in_milliseconds(value: time) -> float:
     return time_in_seconds(value) * 1000
-
-
-def time_fromisoformat(value: str) -> time:
-    """
-    This is required for Python 3.6 support. datetime.time.fromisoformat was
-    only added in Python 3.7. Until LibreTime drops Python 3.6 support, this
-    wrapper uses the old way of doing it.
-    """
-    try:
-        obj = datetime.strptime(value, "%H:%M:%S.%f")
-    except ValueError:
-        obj = datetime.strptime(value, "%H:%M:%S")
-    return obj.time()

shared/tests/datetime_test.py

@@ -1,12 +1,8 @@
 from datetime import time
 
-from pytest import approx, mark
+from pytest import approx
 
-from libretime_shared.datetime import (
-    time_fromisoformat,
-    time_in_milliseconds,
-    time_in_seconds,
-)
+from libretime_shared.datetime import time_in_milliseconds, time_in_seconds
 
 
 def test_time_in_seconds():
@@ -17,15 +13,3 @@ def test_time_in_seconds():
 def test_time_in_milliseconds():
     value = time(hour=0, minute=0, second=0, microsecond=500000)
     assert time_in_milliseconds(value) == 500
-
-
-@mark.parametrize(
-    "payload, expected",
-    [
-        ("00:00:00.500000", time(microsecond=500000)),
-        ("00:04:30.092540", time(minute=4, second=30, microsecond=92540)),
-        ("00:04:30", time(minute=4, second=30)),
-    ],
-)
-def test_time_fromisoformat(payload, expected):
-    assert time_fromisoformat(payload) == expected