diff --git a/README.md b/README.md
index 5cbe1f4..672abca 100644
--- a/README.md
+++ b/README.md
@@ -15,9 +15,9 @@ Example Usage
 =============
 **Python**
 ```Python
-blocklist = ('disposable_email_blocklist.conf')
-blocklist_content = [line.rstrip() for line in blocklist.readlines()]
-if email.split('@')[1] in blocklist_content:
+with open('disposable_email_blocklist.conf') as blocklist:
+    blocklist_content = {line.rstrip() for line in blocklist.readlines()}
+if email.partition('@')[2] in blocklist_content:
     message = "Please enter your permanent email address."
     return (False, message)
 else: