diff --git a/.flake8 b/.flake8
new file mode 100644
index 00000000..1bc02d11
--- /dev/null
+++ b/.flake8
@@ -0,0 +1,7 @@
+[flake8]
+exclude = __pycache__,__init__.py
+ignore =
+    E501 line too long, fixed by black
+    W503 line break before binary operator
+    W293 blank line contains whitespace
+    W291 trailing whitespace
diff --git a/vnpy/__init__.py b/vnpy/__init__.py
index 1b483f37..f2dc0e40 100644
--- a/vnpy/__init__.py
+++ b/vnpy/__init__.py
@@ -1 +1 @@
-__version__ == "2.0"
+__version__ = "2.0"