diff --git a/cgi-bin/cgi_1.py b/cgi-bin/cgi_1.py
index baa5c3e..60fa9bc 100644
--- a/cgi-bin/cgi_1.py
+++ b/cgi-bin/cgi_1.py
@@ -1,5 +1,8 @@
-#!/usr/bin/env python
-import cgi
-
-
-cgi.test()
+#!/usr/bin/env python
+import cgitb
+import cgi
+cgitb.enable()
+
+
+
+cgi.test()
diff --git a/cgi-bin/cgi_2.py b/cgi-bin/cgi_2.py
index ae4ed0d..75f560c 100644
--- a/cgi-bin/cgi_2.py
+++ b/cgi-bin/cgi_2.py
@@ -1,32 +1,32 @@
-#!/usr/bin/env python
-import cgi
-import cgitb
-cgitb.enable()
-import os
-import datetime
-
-
-default = "No Value Present"
-
-
-print("Content-Type: text/html")
-print("")
-
-body = """<html>
-<head>
-<title>Lab 1 - CGI experiments</title>
-</head>
-<body>
-<p>Hey there, this page has been generated by {software}, running {script}</p>
-<p>Today is {month} {date}, {year}.</p>
-<p>This page was requested by IP Address {client_ip}</p>
-</body>
-</html>""".format(
-    software=os.environ.get('SERVER_SOFTWARE', default),
-    script='aaaa',
-    month='bbbb',
-    date='cccc',
-    year='dddd',
-    client_ip='eeee'
-)
-print(body)
+#!/usr/bin/env python
+import cgi
+import cgitb
+cgitb.enable()
+import os
+import datetime
+
+
+default = "No Value Present"
+
+
+print("Content-Type: text/html")
+print("")
+
+body = """<html>
+<head>
+<title>Lab 1 - CGI experiments</title>
+</head>
+<body>
+<p>Hey there, this page has been generated by {software}, running {script}</p>
+<p>Today is {month} {date}, {year}.</p>
+<p>This page was requested by IP Address {client_ip}</p>
+</body>
+</html>""".format(
+    software=os.environ.get('SERVER_SOFTWARE', default),
+    script=os.environ.get('SCRIPT_NAME', default),
+    month=datetime.datetime.now().strftime('%B'),
+    date=datetime.datetime.now().day,
+    year=datetime.datetime.now().year,
+    client_ip=os.environ.get('REMOTE_ADDR', default),
+)
+print(body)
\ No newline at end of file
diff --git a/cgi-bin/cgi_sums.py b/cgi-bin/cgi_sums.py
index feed2bc..8b1d67e 100644
--- a/cgi-bin/cgi_sums.py
+++ b/cgi-bin/cgi_sums.py
@@ -1,9 +1,18 @@
-#!/usr/bin/env python
-import cgi
-import cgitb
-
-cgitb.enable()
-
-print("Content-type: text/plain")
-print()
-print("Your job is to make this work")
+#!/usr/bin/env python
+import cgi
+import cgitb
+
+cgitb.enable()
+
+form = cgi.FieldStorage()
+operands = form.getlist('operand')
+
+try:
+    total = sum(map(int, operands))
+    body = "Your total is: {}".format(total)
+except (ValueError, TypeError):
+    body = "Unable to calculate a sum: please provide integer operands."
+
+print("Content-type: text/plain")
+print()
+print(body)
\ No newline at end of file
diff --git a/cgi-bin/hello_world.py b/cgi-bin/hello_world.py
index 94f9a2d..db7ca0b 100644
--- a/cgi-bin/hello_world.py
+++ b/cgi-bin/hello_world.py
@@ -1,7 +1,7 @@
-#!/usr/bin/env python
-
-print("Content-Type: text/plain")
-print("")
-
-print("Hello, world!")
-
+#!/usr/bin/env python
+
+print("Content-Type: text/plain")
+print("")
+
+print("Hello, world!")
+
