diff --git a/main.py b/main.py
index 2badc18..aa05e2a 100644
--- a/main.py
+++ b/main.py
@@ -2,9 +2,9 @@
 Generate WireGuard tunnel configuration files from your data
 """
 
+from typing import List
 import json
 import environ
-from typing import List
 
 # Load environment variables from .env file
 env = environ.Env()
@@ -13,30 +13,31 @@ environ.Env.read_env()
 
 def get_ips() -> List[str]:
     """
-    Load the list of IP addresses from the `ip-list.json` file and return a list of unique IP addresses.
+    Load the list of IP addresses from the `ip-list.json` file
+    and return a list of unique IP addresses.
 
     Returns:
         A list of unique IP addresses.
     """
-    with open('ip-list.json', 'r', encoding='UTF-8') as f:
+    with open('ip-list.json', 'r', encoding='UTF-8') as ip_list:
         ips = []
         # Load IP addresses from JSON file
-        lists = json.load(f)
+        lists = json.load(ip_list)
         # Iterate over groups of IP addresses
         for group in lists:
             # Iterate over individual IP addresses
-            for ip in lists[group]:
-                ips.append(ip)
+            for endpoint_ip in lists[group]:
+                ips.append(endpoint_ip)
         # Return a list of unique IP addresses
         return list(set(ips))
 
 
-def generate_config(endpoint: dict) -> None:
+def generate_config(profile: dict) -> None:
     """
     Generate a WireGuard configuration file for the specified endpoint.
 
     Args:
-        endpoint: A dictionary containing the endpoint name and address.
+        profile: A dictionary containing the endpoint name and address.
 
     Returns:
         None
@@ -44,29 +45,29 @@ def generate_config(endpoint: dict) -> None:
     # Get the list of unique IP addresses
     ips = ", ".join(map(str, get_ips()))
     # Define the filename for the configuration file
-    filename = endpoint['name'] + '.conf'
+    filename = profile['name'] + '.conf'
     # Get environment variables with default values
     address = env('ADDRESS', default='10.0.0.1/24')
     mtu = env('MTU', default='1420')
-    persistent_keepalive = env('PERSISTENT_KEEPALIVE', default='25')
+    keepalive = env('PERSISTENT_KEEPALIVE', default='25')
     # Write the configuration file
-    with open(filename, 'w', encoding='UTF-8') as f:
+    with open(filename, 'w', encoding='UTF-8') as profile_file:
         # Write the [Interface] section
-        f.write('[Interface]\n')
-        f.write('PrivateKey = {}\n'.format(env('PRIVATE_KEY')))
-        f.write('Address = {}\n'.format(address))
-        f.write('MTU = {}\n\n'.format(mtu))
+        profile_file.write("[Interface]\n")
+        profile_file.write(f"PrivateKey = {env('PRIVATE_KEY')}\n")
+        profile_file.write(f"Address = {address}\n")
+        profile_file.write(f"MTU = {mtu}\n\n")
         # Write the [Peer] section
-        f.write('[Peer]\n')
-        f.write('PublicKey = {}\n'.format(env('PUBLIC_KEY')))
-        f.write('AllowedIPs = {}\n'.format(ips))
-        f.write('Endpoint = {}\n'.format(endpoint['address']))
-        f.write('PersistentKeepalive = {}\n'.format(persistent_keepalive))
+        profile_file.write("[Peer]\n")
+        profile_file.write(f"PublicKey = {env('PUBLIC_KEY')}\n")
+        profile_file.write(f"AllowedIPs = {ips}\n")
+        profile_file.write(f"Endpoint = {endpoint['address']}\n")
+        profile_file.write(f"PersistentKeepalive = {keepalive}\n")
 
 
 # Load endpoint data from JSON file
-with open('endpoints.json', 'r', encoding='UTF-8') as f:
-    endpoints = json.load(f)
+with open('endpoints.json', 'r', encoding='UTF-8') as endpoints_file:
+    endpoints = json.load(endpoints_file)
     # Generate a configuration file for each endpoint
     for endpoint in endpoints:
         generate_config(endpoint)