diff --git a/go/helper_test.go b/go/helper_test.go
index 28a1932c..a63d86e1 100644
--- a/go/helper_test.go
+++ b/go/helper_test.go
@@ -12,8 +12,8 @@ type mockHandler struct{}
 func (m mockHandler) ServeHTTP(http.ResponseWriter, *http.Request) {}
 
 func TestNewServer(t *testing.T) {
-	var addr = "127.0.0.1:8080"
-	var srv = NewServer(addr, mockHandler{})
+	addr := "127.0.0.1:8080"
+	srv := NewServer(addr, mockHandler{})
 	if !assert.Equal(t, addr, srv.Addr) {
 		t.Fail()
 	}
diff --git a/go/img.go b/go/img.go
index 72af03ae..e23729cf 100644
--- a/go/img.go
+++ b/go/img.go
@@ -9,7 +9,7 @@ import (
 )
 
 func imageIndex(img []image.Image, find image.Image) int {
-	for i, _ := range img {
+	for i := range img {
 		if img[i] == find {
 			return i
 		}
diff --git a/python/tests/test_code.py b/python/tests/test_code.py
index 159c78df..ee6cfbf1 100644
--- a/python/tests/test_code.py
+++ b/python/tests/test_code.py
@@ -6,6 +6,7 @@ def test_random_number_generator():
     """Test random number generator."""
     assert RandomNumberGenerator().get_number()
 
+
 class Tests(unittest.TestCase):
     def my_test(self, arg1, arg2):
         self.assertEquals(arg1, arg2)
diff --git a/python/type_checks.py b/python/type_checks.py
index 811da988..766e8444 100644
--- a/python/type_checks.py
+++ b/python/type_checks.py
@@ -1,6 +1,7 @@
 def greet_all(names: list[str]) -> None:
     for name in names:
-        print('Hello ' + name)
+        print("Hello " + name)
+
 
 if __name__ == "__main__":
     heights = [5.5, 6, 5.9]