diff --git a/notebooks/nbstripout b/notebooks/nbstripout
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+#!/usr/bin/env python
+"""strip outputs from an IPython Notebook
+
+Opens a notebook, strips its output, and writes the outputless version to the original file.
+
+Useful mainly as a git pre-commit hook for users who don't want to track output in VCS.
+
+This does mostly the same thing as the `Clear All Output` command in the notebook UI.
+
+From: https://gist.github.com/minrk/6176788
+
+"""
+
+import io
+import sys
+
+from IPython.nbformat import current
+
+def strip_output(nb):
+    """strip the outputs from a notebook object"""
+    nb.metadata.pop('signature', None)
+    for cell in nb.worksheets[0].cells:
+        if 'outputs' in cell:
+            cell['outputs'] = []
+        if 'prompt_number' in cell:
+            cell['prompt_number'] = None
+    return nb
+
+if __name__ == '__main__':
+    filename = sys.argv[1]
+    with io.open(filename, 'r', encoding='utf8') as f:
+        nb = current.read(f, 'json')
+    nb = strip_output(nb)
+    with io.open(filename, 'w', encoding='utf8') as f:
+        current.write(nb, f, 'json')
+