add part of opencv

Lib/opencv/sources/samples/python/_doc.py

@@ -0,0 +1,25 @@
+#!/usr/bin/env python
+
+'''
+Scans current directory for *.py files and reports
+ones with missing __doc__ string.
+'''
+
+# Python 2/3 compatibility
+from __future__ import print_function
+
+from glob import glob
+
+if __name__ == '__main__':
+    print('--- undocumented files:')
+    for fn in glob('*.py'):
+        loc = {}
+        try:
+            try:
+                execfile(fn, loc)           # Python 2
+            except NameError:
+                exec(open(fn).read(), loc)  # Python 3
+        except Exception:
+            pass
+        if '__doc__' not in loc:
+            print(fn)