Destructive modification of sys.argv on import tables

[rmcgibbo]

In trying to debug a very odd failure of my script where one of arguments was being removed from sys.argv, I found that the root cause is that pytables removes the flag --heavy from sys.argv purely due to import tables in a user script.

import tables triggers from tables.tests import print_versions, test, on line 133 of tables/__init__.py, which further triggers from tables.tests.test_all import print_versions, test, suite, and then from tables.tests import common.

The result is that this line gets executed, which removes --heavy from sys.argv, purely by importing tables:
https://github.com/PyTables/PyTables/blob/develop/tables/tests/common.py#L56-L58

[avalentino]

Hi @rmcgibbo,
thanks for reporting.
I will fix it ASAP.