Turns out it's due to the script reading a parameter, in the usual
Pythonic way, at the end of the file:
if __name__ == "__main__":
import sys
m = int(sys.argv[1])
compute_alpha(m)
Namely, load() tries to evaluate int(sys.argv[1]), whereas for some
reason sys.argv[1] is '-i'.
So this is probably not a bug, but deserves mentioning in the documentation.
On Mon, Jan 14, 2019 at 10:42 AM Dima Pasechnik <dimp...@gmail.com> wrote:
>
> 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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