Use Python path manipulation rather than symlink (issue #151) (#154)

Author: kjd

tools/idna-data

@@ -2,6 +2,14 @@
 
 import argparse, collections, datetime, os, re, sys, unicodedata
 from urllib.request import urlopen
+
+# Use intranges.intranges_from_list() from the sibling idna directory
+sys.path.append(
+    os.path.join(
+        os.path.dirname(os.path.dirname(os.path.abspath(__file__))),
+        "idna"
+    )
+)
 from intranges import intranges_from_list
 
 if sys.version_info[0] < 3: