diff --git a/.gitignore b/.gitignore
index a310cc1..ebeb8c2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,6 +22,7 @@ lib-cov
 # Coverage directory used by tools like istanbul
 coverage
 *.lcov
+.coverage
 
 # nyc test coverage
 .nyc_output
@@ -93,3 +94,7 @@ public/
 
 # macOS Finder metadata
 .DS_Store
+
+# python things
+*.py[oc]
+__pycache__
diff --git a/demo/calculator_test.py b/demo/calculator_test.py
index 1e2eb04..f564193 100644
--- a/demo/calculator_test.py
+++ b/demo/calculator_test.py
@@ -1,4 +1,4 @@
-3from .calculator import Calculator
+from .calculator import Calculator
 
 
 def test_add():