username read from environ, PEP8

python/hangover.py

@@ -8,22 +8,23 @@ import subprocess
 
 # exit if sessions with my username are found
 output = subprocess.check_output('who')
-if 'my_username' in output:
+
+if os.environ.get('USER') in output:
     sys.exit()
 
 # returns 'None' if the key doesn't exist
 TWILIO_ACCOUNT_SID = os.environ.get('TWILIO_ACCOUNT_SID')
-TWILIO_AUTH_TOKEN  = os.environ.get('TWILIO_AUTH_TOKEN')
+TWILIO_AUTH_TOKEN = os.environ.get('TWILIO_AUTH_TOKEN')
 
 # Phone numbers
-my_number      = '+xxx'
+my_number = '+xxx'
 number_of_boss = '+xxx'
 
 excuses = [
-  'Locked out',
-  'Pipes broke',
-  'Food poisoning',
-  'Not feeling well'
+    'Locked out',
+    'Pipes broke',
+    'Food poisoning',
+    'Not feeling well'
 ]
 
 client = TwilioRestClient(TWILIO_ACCOUNT_SID, TWILIO_AUTH_TOKEN)