My student created a sage script crossing.sage that runs by itself,
i.e. starting it in bash, with it having the 1st line

#!/usr/bin/env sage

but an attempt to load("crossing.sage") in Sage gives an error:

ValueError                                Traceback (most recent call last)
<ipython-input-1-f92dbb154243> in <module>()
----> 1 load("crossing.sage")
/home/dimpase/sage/local/lib/python2.7/site-packages/sage/misc/persist.pyx
in sage.misc.persist.load (build/cythonized/sag
e/misc/persist.c:2470)()
    134
    135     if sage.repl.load.is_loadable_filename(filename):
--> 136         sage.repl.load.load(filename, globals())
    137         return
    138
/home/dimpase/sage/local/lib/python2.7/site-packages/sage/repl/load.pyc
in load(filename, globals, attach)
    261                 add_attached_file(fpath)
    262             with open(fpath) as f:
--> 263                 exec(preparse_file(f.read()) + "\n", globals)
    264     elif ext == '.spyx' or ext == '.pyx':
    265         if attach:
<string> in <module>()
ValueError: invalid literal for int() with base 10: '-i'
sage:

---------------------

Is this a Sage bug? Any idea what might be going on there?

Thanks
Dima

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