py2/py3: make erp5_hal_json_style compatible with Python 3.

3 jobs for feat/merge_a_bit_of_zope4py3 in 0 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-TestRunner2

00:35:57

passed ERP5.UnitTest-TestRunner2

01:13:08

failed ERP5.UnitTest-Zope2-ForTestRunner2

01:20:34