1 files changed, 4 insertions, 4 deletions
diff --git a/users/wpcarro/scratch/simple-select/scanner.py b/users/wpcarro/scratch/simple-select/scanner.py
index 96704ec1ab3c..5dae68aee551 100644
--- a/users/wpcarro/scratch/simple-select/scanner.py
+++ b/users/wpcarro/scratch/simple-select/scanner.py
@@ -2,15 +2,15 @@
 # scanner/lexer needs are peek and advance; other functions (e.g. match) are
 # nice-to-haves.
 class Scanner(object):
-  def __init__(self, source):
+  def __init__(self, chars):
     self.i = 0
-    self.source = source
+    self.chars = chars
 
   def exhausted(self):
-    return self.i >= len(self.source)
+    return self.i >= len(self.chars)
 
   def peek(self, n=0):
-    return self.source[self.i + n] if self.i + n < len(self.source) else '\0'
+    return self.chars[self.i + n] if self.i in range(0, len(self.chars)) else '\0'
 
   def advance(self):
     result = self.peek()