fixicks gonna fix - Chameleon

    
      
diff --git a/pythonetc/snippets/hamming.md b/pythonetc/snippets/hamming.md
index 7ff28e6..48b0739 100644
--- a/pythonetc/snippets/hamming.md
+++ b/pythonetc/snippets/hamming.md
@@ -4,7 +4,7 @@
 from itertools import zip_longest
 
 def hamming(left, right):
-    return sum([sl != sr for sl, sr in zip_longest(left, right)])
+    return sum(sl != sr for sl, sr in zip_longest(left, right))
 
 hamming('hello', 'hello')
 # 0
diff --git a/pythonetc/zen.md b/pythonetc/zen.md
index fb6d9a1..2506ea2 100644
--- a/pythonetc/zen.md
+++ b/pythonetc/zen.md
@@ -1,7 +1,7 @@
-The famous "Zen of Python" was introduced in [PEP-20](https://www.python.org/dev/peps/pep-0020/). This is 19 Guido van Rossum's aphorisms collected by Tim Peters. Do `import this` in the Python interpreter to see them:
+The famous "Zen of Python" was introduced in [PEP-20](https://www.python.org/dev/peps/pep-0020/). This is 19 aphorisms [authored by Tim Peters](https://mail.python.org/pipermail/python-list/1999-June/001951.html). Do `import this` in the Python interpreter to see them:
 
 ```python
->>> import this                                                                 
+>>> import this
 The Zen of Python, by Tim Peters
 
 Beautiful is better than ugly.