diff --git a/services/__init__.py b/services/__init__.py
index 303f927..80198d3 100644
--- a/services/__init__.py
+++ b/services/__init__.py
@@ -2,11 +2,13 @@
 import json
 from flask import make_response
 
+
 def root_dir():
     """ Returns root director for this project """
     return os.path.dirname(os.path.realpath(__file__ + '/..'))
 
+
 def nice_json(arg):
-    response = make_response(json.dumps(arg, sort_keys = True, indent=4))
+    response = make_response(json.dumps(arg, sort_keys=True, indent=4))
     response.headers['Content-type'] = "application/json"
-    return response
\ No newline at end of file
+    return response
diff --git a/services/bookings.py b/services/bookings.py
index da50a8c..e3ecafa 100644
--- a/services/bookings.py
+++ b/services/bookings.py
@@ -25,6 +25,7 @@ def hello():
 def booking_list():
     return nice_json(bookings)
 
+
 @app.route("/bookings/<username>")
 def booking_record(username):
     if username not in bookings:
@@ -32,6 +33,6 @@ def booking_record(username):
 
     return nice_json(bookings[username])
 
-if __name__ == "__main__":
-    app.run(port=5003, debug = True)
 
+if __name__ == "__main__":
+    app.run(port=5003, debug=True)
diff --git a/services/movies.py b/services/movies.py
index a6e96ba..37d0ac6 100644
--- a/services/movies.py
+++ b/services/movies.py
@@ -9,6 +9,7 @@
 with open("{}/database/movies.json".format(root_dir()), "r") as f:
     movies = json.load(f)
 
+
 @app.route("/")
 def hello():
     return nice_json({
@@ -19,6 +20,7 @@ def hello():
         }
     })
 
+
 @app.route("/movies/<movieid>")
 def movie_info(movieid):
     if movieid not in movies:
@@ -29,11 +31,11 @@ def movie_info(movieid):
 
     return nice_json(result)
 
+
 @app.route("/movies")
 def movie_record():
     return nice_json(movies)
 
 
 if __name__ == "__main__":
-    app.run(port=5001, debug = True)
-
+    app.run(port=5001, debug=True)
diff --git a/services/showtimes.py b/services/showtimes.py
index a8783b9..23bd75d 100644
--- a/services/showtimes.py
+++ b/services/showtimes.py
@@ -9,6 +9,7 @@
 with open("{}/database/showtimes.json".format(root_dir()), "r") as f:
     showtimes = json.load(f)
 
+
 @app.route("/")
 def hello():
     return nice_json({
@@ -19,10 +20,12 @@ def hello():
         }
     })
 
+
 @app.route("/showtimes")
 def showtimes_list():
     return nice_json(showtimes)
 
+
 @app.route("/showtimes/<date>")
 def showtimes_record(date):
     if date not in showtimes:
@@ -30,5 +33,6 @@ def showtimes_record(date):
     print showtimes[date]
     return nice_json(showtimes[date])
 
+
 if __name__ == "__main__":
-    app.run(port=5002, debug = True)
\ No newline at end of file
+    app.run(port=5002, debug=True)
diff --git a/services/user.py b/services/user.py
index d258e3b..d8bd0a0 100644
--- a/services/user.py
+++ b/services/user.py
@@ -23,10 +23,12 @@ def hello():
         }
     })
 
+
 @app.route("/users")
 def users_list():
     return nice_json(users)
 
+
 @app.route("/users/<username>")
 def user_record(username):
     if username not in users:
@@ -34,6 +36,7 @@ def user_record(username):
 
     return nice_json(users[username])
 
+
 @app.route("/users/<username>/bookings")
 def user_bookings(username):
     """
@@ -46,7 +49,7 @@ def user_bookings(username):
         raise NotFound("User '{}' not found.".format(username))
 
     try:
-        users_bookings = requests.get("http://127.0.0.1:5003/bookings/{}".format(username))
+        users_bookings = requests.get("http://0:5003/bookings/{}".format(username))
     except requests.exceptions.ConnectionError:
         raise ServiceUnavailable("The Bookings service is unavailable.")
 
@@ -61,7 +64,7 @@ def user_bookings(username):
         result[date] = []
         for movieid in movies:
             try:
-                movies_resp = requests.get("http://127.0.0.1:5001/movies/{}".format(movieid))
+                movies_resp = requests.get("http://0:5001/movies/{}".format(movieid))
             except requests.exceptions.ConnectionError:
                 raise ServiceUnavailable("The Movie service is unavailable.")
             movies_resp = movies_resp.json()
@@ -86,4 +89,4 @@ def user_suggested(username):
 
 
 if __name__ == "__main__":
-    app.run(port = 5000, debug = True)
\ No newline at end of file
+    app.run(port=5000, debug=True)