Added script to convert from townscript format to mailman format.

scripts/townscript2mailman.py

@@ -0,0 +1,41 @@
+"""Usage: townscript2mailman LAST_REGID < townscript-file.txt > mailman-format.txt)
+
+The ticket purchase data from townscript is available in CSV
+format. The last registration ID that was already added
+inpycon-announce needs to be kept track of. This needs to provided as
+argument to the script. Only the registration greater than LAST_REGID
+will be provided in Mailman format.
+
+NOTE: Mailman gets timedout if more than 100 users are added in
+bulk. So do not add more that 100 users at a time to Mailman.
+
+"""
+import sys
+import csv
+
+email_list = set()
+try:
+    last_regid = int(sys.argv[1])
+except (IndexError, ValueError):
+    print("Usage: townscript2mailman.py LAST_REGID")
+    exit(1)
+
+reader = csv.reader(sys.stdin)
+for i, line in enumerate(reader):
+    if i == 0:
+        continue
+
+    email = line[2]
+    name = line[1]
+    regid = int(line[0])
+
+    if email in email_list:
+        continue
+
+    if regid <= last_regid:
+        continue
+
+    email_list.add(email)
+
+    print("{} <{}>".format(name, email))
+