Only read env variables on __init__ #157
Merged
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The default values for arguments to
Nomad.__init__
are read when the class is initialized (so when python reads__init__.py
.If one later want to change the values of the
NOMAD_*
env variables, these new values will get ignored because by then the defaults for arguments are already set.This changes the commit to have a proper
None
default, and only read the current values of env variables when__init__()
is called.See https://medium.com/@nebiyuelias1/be-careful-when-using-default-arguments-in-python-fd92df94efee for why defining the default with a function call is prone to error.