naming convention

inkycal/tests/helper_functions.py

@@ -10,15 +10,15 @@ import sys
 from os.path import exists
 from inkycal.modules.inky_image import Inkyimage
 
-preview =  Inkyimage.preview
+preview = Inkyimage.preview
 merge = Inkyimage.merge
 
 def get_environment():
-  # Check if this is running on the Raspberry Pi
-  environment = None
-  envir_path = '/sys/firmware/devicetree/base/model'
-  if exists(envir_path):
-    with open(envir_path) as file:
-      if 'Raspberry' in file.read():
-        environment = 'Raspberry'
-  return environment
+    # Check if this is running on the Raspberry Pi
+    environment = None
+    envir_path = '/sys/firmware/devicetree/base/model'
+    if exists(envir_path):
+        with open(envir_path) as file:
+            if 'Raspberry' in file.read():
+                environment = 'Raspberry'
+    return environment