Index: python-bx/scripts/bed_build_windows.py
===================================================================
--- python-bx.orig/scripts/bed_build_windows.py
+++ python-bx/scripts/bed_build_windows.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.4
+#!/usr/bin/python3
 
 """
 Build windows of length `window_size` over the sequences defined by
Index: python-bx/scripts/bed_complement.py
===================================================================
--- python-bx.orig/scripts/bed_complement.py
+++ python-bx/scripts/bed_complement.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.4
+#!/usr/bin/python3
 
 """
 Complement the regions of a bed file. Requires a file that maps source names
Index: python-bx/scripts/bed_count_by_interval.py
===================================================================
--- python-bx.orig/scripts/bed_count_by_interval.py
+++ python-bx/scripts/bed_count_by_interval.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.4
+#!/usr/bin/python3
 """
 For each interval in `bed1` count the number of intersecting regions in `bed2`.
 
Index: python-bx/scripts/bed_count_overlapping.py
===================================================================
--- python-bx.orig/scripts/bed_count_overlapping.py
+++ python-bx/scripts/bed_count_overlapping.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.4
+#!/usr/bin/python3
 """
 For each interval in `bed1` count the number of intersecting regions in `bed2`.
 
Index: python-bx/scripts/bed_rand_intersect.py
===================================================================
--- python-bx.orig/scripts/bed_rand_intersect.py
+++ python-bx/scripts/bed_rand_intersect.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.4
+#!/usr/bin/python3
 
 """
 From a set of regions and two sets of intervals inside those regions
Index: python-bx/scripts/div_snp_table_chr.py
===================================================================
--- python-bx.orig/scripts/div_snp_table_chr.py
+++ python-bx/scripts/div_snp_table_chr.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.4
+#!/usr/bin/python3
 
 """
 FIXME!
Index: python-bx/scripts/int_seqs_to_char_strings.py
===================================================================
--- python-bx.orig/scripts/int_seqs_to_char_strings.py
+++ python-bx/scripts/int_seqs_to_char_strings.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python3
 
 """
 Translate lists of space separated integers (magnitude less than 62) and print
Index: python-bx/scripts/interval_join.py
===================================================================
--- python-bx.orig/scripts/interval_join.py
+++ python-bx/scripts/interval_join.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.4
+#!/usr/bin/python3
 
 """
 Match up intersecting intervals from two files. This performs a "full join",
Index: python-bx/scripts/lzop_build_offset_table.py
===================================================================
--- python-bx.orig/scripts/lzop_build_offset_table.py
+++ python-bx/scripts/lzop_build_offset_table.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.4
+#!/usr/bin/python3
 
 """
 Read a compressed file as created by 'lzop' from stdin and write a table to
Index: python-bx/scripts/mMK_bitset.py
===================================================================
--- python-bx.orig/scripts/mMK_bitset.py
+++ python-bx/scripts/mMK_bitset.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.4
+#!/usr/bin/python3
 from __future__ import print_function
 
 from optparse import OptionParser
Index: python-bx/scripts/maf_div_sites.py
===================================================================
--- python-bx.orig/scripts/maf_div_sites.py
+++ python-bx/scripts/maf_div_sites.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.4
+#!/usr/bin/python3
 """
 Create a bed file listing all the divergent sites between two specific species
 in a maf.
Index: python-bx/scripts/maf_interval_alignibility.py
===================================================================
--- python-bx.orig/scripts/maf_interval_alignibility.py
+++ python-bx/scripts/maf_interval_alignibility.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.4
+#!/usr/bin/python3
 
 """
 WARNING: bz2/bz2t support and file cache support are new and not as well
Index: python-bx/scripts/maf_species_in_all_files.py
===================================================================
--- python-bx.orig/scripts/maf_species_in_all_files.py
+++ python-bx/scripts/maf_species_in_all_files.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.4
+#!/usr/bin/python3
 
 """
 Takes a list of maf filenames on the command line and prints a comma separated