--- a
+++ b/notebook2script.py
@@ -0,0 +1,34 @@
+#!/usr/bin/env python
+
+import json, fire, re
+from pathlib import Path
+
+def is_export(cell):
+    if cell['cell_type'] != 'code': return False
+    src = cell['source']
+    if len(src) == 0 or len(src[0]) < 7: return False
+    #import pdb; pdb.set_trace()
+    return re.match(r'^\s*#\s*export\s*$', src[0], re.IGNORECASE) is not None
+
+def notebook2script(fname):
+    "Finds cells starting with `#export` and puts them into a new module"
+    fname = Path(fname)
+    fname_out = f'nb_{fname.stem.split("_")[0]}.py'
+    main_dic = json.load(open(fname,'r'))
+    code_cells = [c for c in main_dic['cells'] if is_export(c)]
+    module = f'''
+#################################################
+### THIS FILE WAS AUTOGENERATED! DO NOT EDIT! ###
+#################################################
+# file to edit: dev_nb/{fname.name}
+
+'''
+    for cell in code_cells: module += ''.join(cell['source'][1:]) + '\n\n'
+    # remove trailing spaces
+    module = re.sub(r' +$', '', module, flags=re.MULTILINE)
+    output_path = fname.parent/'exp'/fname_out
+    open(output_path,'w').write(module[:-2])
+    print(f"Converted {fname} to {output_path}")
+
+if __name__ == '__main__': fire.Fire(notebook2script)
+