Ned Deily <n...@python.org> added the comment:
Python is behaving as documented here. The problem is that you have a package named 'xml' which conflicts with the package of the same name in the standard library (https://docs.python.org/3/library/xml.html) which may cause conflicts for other packages depending on the import search order. The documentation for sys.path (https://docs.python.org/3/library/sys.html#sys.path) explains what you are seeing: 'As initialized upon program startup, the first item of this list, path[0], is the directory containing the script that was used to invoke the Python interpreter. If the script directory is not available (e.g. if the interpreter is invoked interactively or if the script is read from standard input), path[0] is the empty string, which directs Python to search modules in the current directory first. Notice that the script directory is inserted before the entries inserted as a result of PYTHONPATH." So, in your first example, "testdriver" will be the first entry on sys.path because the script was invoked from there; this mean 'xml' will be imported from the "testdriver" directory. But, in your second example, the script is read from the command line via the -c argument so the first sys.path entry will be '' and the current directory is 'python_bug' so now your 'xml' package is no longer found first. This is a common pitfall and is sometimes called the "name shadowing trap" (see http://python-notes.curiousefficiency.org/en/latest/python_concepts/import_traps.html#the-name-shadowing-trap). The easiest and most robust solution is to avoid using package and module names that conflict with those in the standard library. ---------- nosy: +ned.deily resolution: -> not a bug stage: -> resolved status: open -> closed _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue44132> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
