Improvement typing (#2735)

* Fix: Circular dependencies of internal files

* Change: dt.date for Date and dt.datetime for DateTime

* Use NewType if available

* FIX: Wrong version test

* Remove: Date and DateTime types due to error

* Change to HomeAssistantType

* General Improvement of Typing

* Improve typing config_validation

* Improve typing script

* General Typing Improvements

* Improve NewType check

* Improve typing db_migrator

* Improve util/__init__ typing

* Improve helpers/location typing

* Regroup imports and remove pylint: disable=ungrouped-imports

* General typing improvements

homeassistant/helpers/script.py

@@ -3,8 +3,12 @@ import logging
 import threading
 from itertools import islice
 
+from typing import Optional, Sequence
+
 import voluptuous as vol
 
+from homeassistant.helpers.typing import ConfigType, HomeAssistantType
+
 import homeassistant.util.dt as date_util
 from homeassistant.const import EVENT_TIME_CHANGED, CONF_CONDITION
 from homeassistant.helpers.event import track_point_in_utc_time
@@ -22,7 +26,8 @@ CONF_EVENT_DATA = "event_data"
 CONF_DELAY = "delay"
 
 
-def call_from_config(hass, config, variables=None):
+def call_from_config(hass: HomeAssistantType, config: ConfigType,
+                     variables: Optional[Sequence]=None) -> None:
     """Call a script based on a config entry."""
     Script(hass, config).run(variables)
 
@@ -31,7 +36,8 @@ class Script():
     """Representation of a script."""
 
     # pylint: disable=too-many-instance-attributes
-    def __init__(self, hass, sequence, name=None, change_listener=None):
+    def __init__(self, hass: HomeAssistantType, sequence, name: str=None,
+                 change_listener=None) -> None:
         """Initialize the script."""
         self.hass = hass
         self.sequence = cv.SCRIPT_SCHEMA(sequence)
@@ -45,11 +51,11 @@ class Script():
         self._delay_listener = None
 
     @property
-    def is_running(self):
+    def is_running(self) -> bool:
         """Return true if script is on."""
         return self._cur != -1
 
-    def run(self, variables=None):
+    def run(self, variables: Optional[Sequence]=None) -> None:
         """Run script."""
         with self._lock:
             if self._cur == -1:
@@ -101,7 +107,7 @@ class Script():
             if self._change_listener:
                 self._change_listener()
 
-    def stop(self):
+    def stop(self) -> None:
         """Stop running script."""
         with self._lock:
             if self._cur == -1: