diff --git a/examples/.gitignore b/examples/.gitignore
new file mode 100644
index 0000000..15584ca
--- /dev/null
+++ b/examples/.gitignore
@@ -0,0 +1 @@
+.pyc
diff --git a/tianshou/agent/.gitignore b/tianshou/agent/.gitignore
new file mode 100644
index 0000000..15584ca
--- /dev/null
+++ b/tianshou/agent/.gitignore
@@ -0,0 +1 @@
+.pyc
diff --git a/tianshou/data/.gitignore b/tianshou/data/.gitignore
new file mode 100644
index 0000000..15584ca
--- /dev/null
+++ b/tianshou/data/.gitignore
@@ -0,0 +1 @@
+.pyc
diff --git a/tianshou/environment/.gitignore b/tianshou/environment/.gitignore
new file mode 100644
index 0000000..15584ca
--- /dev/null
+++ b/tianshou/environment/.gitignore
@@ -0,0 +1 @@
+.pyc
diff --git a/tianshou/simulator/.gitignore b/tianshou/simulator/.gitignore
new file mode 100644
index 0000000..15584ca
--- /dev/null
+++ b/tianshou/simulator/.gitignore
@@ -0,0 +1 @@
+.pyc