fix file syntax

.circleci/config.yml

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 020abc9..bc573c1 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -62,7 +62,7 @@
       - run: python3 -m pip install --upgrade pip
       - run: python2 -m pip install flake8==3.9.2
       - run: python3 -m pip install flake8==3.9.2
-      - run: python2 -m flake8 --show-source --statistics --exclude=./scripts
+      - run: python2 -m flake8 --show-source --statistics --extend-exclude=./scripts
       - run: python3 -m flake8 --show-source --statistics
   test-linux:
     executor: bionic

.flake8

diff --git a/.flake8 b/.flake8
index fd12855..e49d748 100644
--- a/.flake8
+++ b/.flake8
@@ -7,18 +7,18 @@
    E722  # bare excepts
    E741, # Variable names such as 'l', 'O', or 'I'
 exclude =
-  ./llvm
-  ./gnu
-  ./upstream
-  ./fastcomp
-  ./fastcomp-clang
-  ./releases
-  ./clang
-  ./emscripten
-  ./binaryen
-  ./git
-  ./node
-  ./python
-  ./temp
-  ./downloads
-  ./crunch
+  ./llvm,
+  ./gnu,
+  ./upstream,
+  ./fastcomp,
+  ./fastcomp-clang,
+  ./releases,
+  ./clang,
+  ./emscripten,
+  ./binaryen,
+  ./git,
+  ./node,
+  ./python,
+  ./temp,
+  ./downloads,
+  ./crunch,