diff --git a/ovh-dns-updater.py b/ovh-dns-updater.py
index fa10a91..e07f00f 100644
--- a/ovh-dns-updater.py
+++ b/ovh-dns-updater.py
@@ -22,23 +22,23 @@ can be provided in variety of ways:
 '''
 -or in the ENVIRONMENT 
 -or in a ovh.conf file
-in which cases we can call with no argument (the ovh module gets the credentials on its own):        
+in which cases we can call with no argument (the ovh module gets the credentials on its own):
 '''
 client = ovh.Client() 
 
-default_ttl =  600  # seconds 
+default_ttl =  600  # seconds
 # ttl = how long will a DNS server cache the value before checking it at the Registrar. Longer value yields faster name resolution most of the time, but less frequent updates
-records_changed = 0 
+records_changed = 0
 # list of hosts (=subdomain.domain.tld) to update, each a dictionnary with at least "domain" and "subdomain" defined
 hosts = [
-        { 
+        {
             "domain": "mydomain.tld", # Required
             "subdomain": "www", # Required. Explicit subdomain or empty string "" (for @) or "*" for wildcard
             #"ipv6": any_value_except_False # Optional : maintain corresponding record, when possible
             "ipv4": False, #explicitly disable modifiying ipv4 (A) records, even if public IPV4 exists (a possibly erroneous record would be left as-is)
             #"ttl": 60 # optional : if 'ttl' in specified in host, overrides the global default value 
         },
-        { 
+        {
             "domain": "otherdomain.tld",
             "subdomain": ""
             # 'ipv4' and 'ipv6' are not listed : automatically maintain any/both records, according to availability
@@ -46,30 +46,30 @@ hosts = [
     ]
 
 checkDNS_interval_hrs = 12.1 # when the saved IP addresses are old, check the DNS record, even if the addresses did not change
-#save last known address in local file. 
-current_ip_file = "/tmp/current_ip.json" 
+#save last known address in local file.
+current_ip_file = "/tmp/current_ip.json"
 
 
-def send_email(msg, sender = 'no_reply@mydomain.com', receiver = 'admin@mydomain.com')
+def send_email(msg, sender = 'no_reply@mydomain.com', receiver = 'admin@mydomain.com') :
   import smtplib
 
   try :
      smtpObj = smtplib.SMTP('localhost')
      smtpObj.sendmail(sender, receiver,
          "From: {}\nTo: {}\nSubject: DNS Update problem\n\n{}\n".format(sender, receiver, msg)
-         )         
+         )
   except smtplib.SMTPException:
      print( timestamp()," : Error unable to send email")
 
 def get_current_ip(v = 4):
     url = 'https://api6.ipify.org' if v == 6 else 'https://api.ipify.org'
-    try :         
+    try :
         r = requests.get(url, timeout=5.0)
     except requests.exceptions.RequestException as e:
         #print("failed getting ipv{} address because {} occurred".format(v, str(e)))
         return False
     return r.text if r.status_code == requests.codes.ok else False
-    
+
 def timestamp() :
     return time.asctime( time.localtime(time.time()) )
 
@@ -112,9 +112,9 @@ def update_record(domain, subdomain, new_ip, _ttl = 600):
             return
         else :
             #print('updating to ', new_ip)
-            result = client.put(path, 
-                subDomain = subdomain, 
-                target = new_ip, 
+            result = client.put(path,
+                subDomain = subdomain,
+                target = new_ip,
                 ttl = _ttl
                  )
             client.post('/domain/zone/{}/refresh'.format(domain))
@@ -124,11 +124,11 @@ def update_record(domain, subdomain, new_ip, _ttl = 600):
     if new_ip != result['target'] :
         records_changed -= 1
         raise Exception("Error updating {}.{} with {}".format(subdomain,domain,new_ip))
-        
-        
+
+
 def delete_record(domain, subdomain, typ):
     """
-    if it exists, delete an A or AAAA record  
+    if it exists, delete an A or AAAA record
     (because the corresponding IP is not available)
     """
     #print("checking record {} for {}.{}".format(typ,subdomain,domain))
@@ -161,7 +161,7 @@ if current_ipv4 or current_ipv6 : #we could get at least one address
   try :
     need_update = (old_ipv4 != current_ipv4) or (old_ipv6 != current_ipv6) or ((old_time - time.time()) > 3600.0 * checkDNS_interval_hrs)
   except : #old values do not exist, we must check the records
-    need_update = True 
+    need_update = True
   if need_update :
     try :
       for host in hosts :
@@ -186,7 +186,7 @@ if current_ipv4 or current_ipv6 : #we could get at least one address
             #print("Not touching AAAA record for {}.{}, as instructed".format(subdomain, domain))
             pass
       #all hosts records have been updated without errors, log change and save current addresses
-      print("{} : new addresses {} ; {} -- {} records updates".format(timestamp(), current_ipv4, current_ipv6, records_changed)    
+      print("{} : new addresses {} ; {} -- {} records updates".format(timestamp(), current_ipv4, current_ipv6, records_changed))
       with open(current_ip_file, 'w') as f:
         json.dump([time.time(), current_ipv4, current_ipv6],f)
     except Exception as e: #some error occured (API down, keys expired...?),