Fixing sytax error in issue #68

[ftherrien]

No description provided.

[ftherrien]

@vstevano we need to spend some time fixing these automatic tests so that we can actually use them to confirm everything works.

Here is the result when I run these tests locally:

================================== short test summary info ===================================
FAILED tests/decorations/test_defects.py::test_iterator - AttributeError: 'pylada.decorations._decorations.FCIterator' object has no attribute '_FC...
FAILED tests/decorations/test_fciterator.py::test_fciterator - AttributeError: 'pylada.decorations._decorations.FCIterator' object has no attribute '_FC...
FAILED tests/espresso/test_extract.py::test_cellshape - AssertionError: assert False
FAILED tests/espresso/test_pwscf.py::test_iteration - TypeError: __init__() got an unexpected keyword argument 'prefix'
FAILED tests/espresso/bdd/test_restart.py::test_check_restart_input - pylada.error.RuntimeError: Cannot restart from unsuccessful calculation
FAILED tests/espresso/bdd/test_restart.py::test_check_restarted_run - pylada.error.RuntimeError: Cannot restart from unsuccessful calculation
============= 6 failed, 475 passed, 35 skipped, 58 warnings in 74.74s (0:01:14) ==============

A lot of them are relevant to QE so you or Matt should take a look at them.

[ftherrien]

I will merge this PR so that importing pylada works, but I will create an issue about the tests failing