MAINT: force shebang to python2.7

Make crystal clear that these remain Python 2 scripts.

4 files changed, 8 insertions, 2 deletions

diff --git a/numpy/linalg/lapack_lite/README.rst b/numpy/linalg/lapack_lite/README.rst
index ed738ab86..9722f9406 100644
--- a/numpy/linalg/lapack_lite/README.rst
+++ b/numpy/linalg/lapack_lite/README.rst
@@ -12,6 +12,9 @@ automatically from a directory of LAPACK source files.
 You'll need `plex 2.0.0dev`_, available from PyPI, installed to do the
 appropriate scrubbing. As of writing, **this is only available for python 2.7**,
 and is unlikely to ever be ported to python 3.
+As a result, all the Python scripts in this directory must remain compatible
+with Python 2.7, even though NumPy itself no longer supports this version,
+until these scripts are rewritten to use something other than ``plex``.
 
 .. _plex 2.0.0dev: https://pypi.python.org/pypi/plex/
 
diff --git a/numpy/linalg/lapack_lite/clapack_scrub.py b/numpy/linalg/lapack_lite/clapack_scrub.py
index 7a0eea20d..35d4d134e 100644
--- a/numpy/linalg/lapack_lite/clapack_scrub.py
+++ b/numpy/linalg/lapack_lite/clapack_scrub.py
@@ -1,4 +1,5 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2.7
+# WARNING! This a Python 2 script. Read README.rst for rationale.
 import os
 import re
 import sys
diff --git a/numpy/linalg/lapack_lite/fortran.py b/numpy/linalg/lapack_lite/fortran.py
index fc09f0808..3eb1d14ed 100644
--- a/numpy/linalg/lapack_lite/fortran.py
+++ b/numpy/linalg/lapack_lite/fortran.py
@@ -1,3 +1,4 @@
+# WARNING! This a Python 2 script. Read README.rst for rationale.
 import re
 import itertools
 
diff --git a/numpy/linalg/lapack_lite/make_lite.py b/numpy/linalg/lapack_lite/make_lite.py
index 0929fc66c..73e4d194e 100755
--- a/numpy/linalg/lapack_lite/make_lite.py
+++ b/numpy/linalg/lapack_lite/make_lite.py
@@ -1,4 +1,5 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2.7
+# WARNING! This a Python 2 script. Read README.rst for rationale.
 """
 Usage: make_lite.py <wrapped_routines_file> <lapack_dir>