readability improvements

switched from string formatting to f-strings
removed some non-required validation
Standardised some logging outputs
better formatting of config inside tests

inkycal/modules/inkycal_weather.py

@@ -90,7 +90,7 @@ class Weather(inkycal_module):
     # Check if all required parameters are present
     for param in self.requires:
       if not param in config:
-        raise Exception('config is missing {}'.format(param))
+        raise Exception(f'config is missing {param}')
 
     # required parameters
     self.api_key = config['api_key']
@@ -146,7 +146,7 @@ class Weather(inkycal_module):
     im_width = int(self.width - (2 * self.padding_left))
     im_height = int(self.height - (2 * self.padding_top))
     im_size = im_width, im_height
-    logger.info('image size: {} x {} px'.format(im_width, im_height))
+    logger.info(f'Image size: {im_size}')
 
     # Create an image for black pixels and one for coloured pixels
     im_black = Image.new('RGB', size = im_size, color = 'white')
@@ -391,7 +391,7 @@ class Weather(inkycal_module):
         daily_temp = [round(_.temperature(unit=temp_unit)['temp'],
                             ndigits=dec_temp) for _ in forecasts]
         # Calculate min. and max. temp for this day
-        temp_range = '{}°/{}°'.format(max(daily_temp), min(daily_temp))
+        temp_range = f'{max(daily_temp)}°/{min(daily_temp)}°'
 
 
         # Get all weather icon codes for this day
@@ -510,4 +510,4 @@ class Weather(inkycal_module):
     return im_black, im_colour
 
 if __name__ == '__main__':
-  print('running {0} in standalone mode'.format(filename))
+  print(f'running {filename} in standalone mode')