QA: Apply ruff suggestions.

Author: Gadgetoid

examples/all-in-one-enviro-mini.py

@@ -21,8 +21,6 @@
 from fonts.ttf import RobotoMedium as UserFont
 from PIL import Image, ImageDraw, ImageFont
 
-from enviroplus import gas
-
 logging.basicConfig(
     format='%(asctime)s.%(msecs)03d %(levelname)-8s %(message)s',
     level=logging.INFO,

examples/luftdaten.py

@@ -1,7 +1,7 @@
 #!/usr/bin/env python3
 
 import time
-from subprocess import PIPE, Popen, check_output
+from subprocess import check_output
 
 import requests
 import ST7735

examples/luftdaten_combined.py

@@ -1,6 +1,5 @@
 import colorsys
 import logging
-import sys
 import time
 from subprocess import PIPE, Popen, check_output
 

examples/mqtt-all.py

@@ -27,7 +27,6 @@
 from subprocess import PIPE, Popen, check_output
 
 import paho.mqtt.client as mqtt
-import paho.mqtt.publish as publish
 from fonts.ttf import RobotoMedium as UserFont
 from PIL import Image, ImageDraw, ImageFont
 

examples/weather-and-light.py

@@ -1,8 +1,6 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-f"Sorry! This program requires Python >= 3.6 😅"
-
 import colorsys
 import os
 import time
@@ -17,7 +15,6 @@
 from fonts.ttf import RobotoMedium as UserFont
 from ltr559 import LTR559
 from PIL import Image, ImageDraw, ImageFilter, ImageFont
-from pytz import timezone
 
 try:
     from smbus2 import SMBus

tests/test_setup.py

@@ -12,7 +12,7 @@ def test_gas_unavailable(GPIO, mocksmbus):
     from enviroplus import gas
     mocksmbus.SMBus(1).read_i2c_block_data.side_effect = IOError("Oh noes!")
     gas._is_setup = False
-    assert gas.available() == False
+    assert gas.available() is False
 
     with pytest.raises(RuntimeError):
         gas.read_all()
@@ -21,21 +21,21 @@ def test_gas_unavailable(GPIO, mocksmbus):
 def test_gas_available(GPIO, smbus_notimeout):
     from enviroplus import gas
     gas._is_setup = False
-    assert gas.available() == True
+    assert gas.available() is True
 
 
 def test_gas_read_all(GPIO, smbus):
     from enviroplus import gas
     gas._is_setup = False
     result = gas.read_all()
 
-    assert type(result.oxidising) == float
+    assert isinstance(result.oxidising, float)
     assert int(result.oxidising) == 16641
 
-    assert type(result.reducing) == float
+    assert isinstance(result.reducing, float)
     assert int(result.reducing) == 16727
 
-    assert type(result.nh3) == float
+    assert isinstance(result.nh3, float)
     assert int(result.nh3) == 16813
 
     assert "Oxidising" in str(result)