:date: 2018-04-23

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Monday, April 23, 2018
======================

I am working on :ticket:`2368` (adapt the test suite) in order to
finish the eidreader project.  I moved the test cases from welfare to
:mod:`lino_book.projects.adg`.

TIL: When you :func:`print` a dict to stdout, Python uses single
quotes around the keys:

>>> d = {'a': 1}
>>> print(d)
{'a': 1}

But that is not valid json:

>>> import json
>>> json.loads("""{'a': 1}""")
Traceback (most recent call last):
...
ValueError: Expecting property name: line 1 column 2 (char 1)

For json requires double quotes for dictionary keys:

>>> json.loads("""{"a": 1}""")
{u'a': 1}

I changed :ref:`eidreader` so that when invoked without any argument
it uses :func:`json.dumps` instead of :func:`print`.  The advantage is
that I can now redirect the output of :cmd:`eidreader` to the
:file:`beid_test_1.json` file in :mod:`lino_book.projects.adg.tests`.