--- a
+++ b/count_barcode_distribution.py
@@ -0,0 +1,24 @@
+import re
+from collections import defaultdict
+try:
+   import cPickle as pickle
+except:
+   import pickle
+
+from indrops import from_fastq, to_fastq
+
+def count():
+
+    barcode_read_counter = defaultdict(int)
+
+    for name, seq, qual in from_fastq(sys.stdin):
+        split_name = name.split(':')
+        cell_name = split_name[0]
+
+        barcode_read_counter[cell_name] += 1
+        sys.stdout.write(to_fastq(name, seq, qual))
+    pickle.dump(dict(barcode_read_counter), sys.stderr)
+
+if __name__=="__main__":
+    import sys, argparse
+    count()