From bd2f6a07335bbe202b4d3283b6b041b1338a1438 Mon Sep 17 00:00:00 2001
From: Devin Stein <devstein@seas.upenn.edu>
Date: Thu, 20 Jun 2019 13:22:05 -0700
Subject: [PATCH] Create pre-commit hook for nbstripout

---
 .gitignore             | 14 ++++++++++++++
 .pre-commit-hooks.yaml |  6 ++++++
 nbstripout.sh          | 30 ++++++++++++++++++++++++++++++
 3 files changed, 50 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 .pre-commit-hooks.yaml
 create mode 100644 nbstripout.sh

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..bd94216
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,14 @@
+*.egg
+*.egg-info/
+*.eggs/
+*.pyc
+.*.swp
+.travis-solo/
+MANIFEST
+README.html
+__pycache__/
+build/
+dist/
+htmlcov/
+.coverage
+.idea/
diff --git a/.pre-commit-hooks.yaml b/.pre-commit-hooks.yaml
new file mode 100644
index 0000000..f08bd24
--- /dev/null
+++ b/.pre-commit-hooks.yaml
@@ -0,0 +1,6 @@
+- id: nbstripout
+  name: Strip Outputs from Notebooks
+  description: Strip outputs from all new notebooks
+  entry: nbstripout
+  language: script
+  files: (^|/).+\.ipynb$
diff --git a/nbstripout.sh b/nbstripout.sh
new file mode 100644
index 0000000..7975855
--- /dev/null
+++ b/nbstripout.sh
@@ -0,0 +1,30 @@
+#!/bin/sh
+#
+# strip output of IPython Notebooks
+# add this as `.git/hooks/pre-commit`
+# to run every time you commit a notebook
+#
+# requires `nbstripout` to be available on your PATH
+#
+
+if git rev-parse --verify HEAD >/dev/null 2>&1; then
+   against=HEAD
+else
+   # Initial commit: diff against an empty tree object
+   against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
+fi
+
+# Find notebooks to be committed
+(
+IFS='
+'
+NBS=`git diff-index --cached $against --name-only --diff-filter=A | grep '.ipynb' | uniq`
+
+for NB in $NBS ; do
+    echo "Removing outputs from $NB"
+    nbstripout "$NB"
+    git add "$NB"
+done
+)
+
+exec git diff-index --check --cached $against --