diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b391c49
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,7 @@
+venv
+build
+spool
+*.h5
+__pycache__
+*.egg-info
+*.whl
diff --git a/build-ext-2.7 b/build-ext-2.7
deleted file mode 100644
index e69de29..0000000
diff --git a/build-ext-3.7 b/build-ext-3.7
deleted file mode 100644
index e69de29..0000000
diff --git a/tests/res_test.py b/tests/res_test.py
index 5ea9601..c302a8f 100644
--- a/tests/res_test.py
+++ b/tests/res_test.py
@@ -4,6 +4,5 @@ def result():
         data["accu"] = accu
         data["ts %i"%num] = ts+0
         data["fft"] = (ts+0).fft()
-        data["ppm"] = (ts+0).fft().ppm(300e6)
         accu+=ts
-        #print ts
\ No newline at end of file
+        print("ts")