$ echo foo.c
foo.c

$ echo foo.?
foo.?

$ ls foo.c
ls: foo.c: No such file or directory

$ ls foo.?
ls: foo.?: No such file or directory

$ perl -le 'print glob "foo.c"'
foo.c  # shell expansion w/o existence check

$ perl -le 'print glob "foo.?"'
# shell expansion w/ existence check

##</code><code>##

$ python -c 'from glob import glob; print(glob("foo.c"))'
[]

$ python -c 'from glob import glob; print(glob("foo.?"))'
[]