def __setattr__(self, name, value):
""" Set workspace variable.
This will lookup the workspace variable name and try to set it to value.
Args:
name(str): Name of the attribute (variable)
value(obj): The value to set the workspace variable to.
Raises:
ValueError: If the variable is not found or if value cannot uniquely converted to
a value of a workspace variable.
"""
try:
v = self.__getattr__(name)
except:
self.__dict__[name] = value
return None
# Handle empty list or None values.
if value is None or (isinstance(value, list) and not value):
arts_api.set_variable_value(self.ptr, v.ws_id, v.group_id,
VariableValueStruct.empty())
return None
self.set_variable(v, value)
def set_variable(self, wsv, value):
"""
This will set a WSV to the given value.
Natively supported types, i.e. any of int, str, [str], [int], numpy.ndarrays,
and scipy.sparse, will be copied directly into the newly created WSV.
In addition to that all arts types the can be stored to XML can
be set to a WSV, but in this case the communication will happen through
the file system (cf. :code:`WorkspaceVariable.from_arts`).
Args:
wsv: The :class:`WorkspaceVariable` to set.
value: The Python object representing the value to set :code:`wsv` to.
"""
if is_empty(value):
err = arts_api.set_variable_value(self.ptr, wsv.ws_id,
wsv.group_id,
VariableValueStruct.empty())
if not err is None:
msg = ("The following error occurred when trying to set the"
" WSV {}: {}".format(wsv.name, err.decode()))
raise Exception(msg)
return None
group = group_names[WorkspaceVariable.get_group_id(value)]
if group != wsv.group:
try:
converted = WorkspaceVariable.convert(wsv.group, value)
except:
converted = None
if converted is None:
raise Exception("Cannot set workspace variable of type {} to "
" value '{}'.".format(wsv.group, value))
value = converted
s = VariableValueStruct(value)
if s.ptr:
err = arts_api.set_variable_value(self.ptr, wsv.ws_id,
wsv.group_id, s)
if not err is None:
msg = ("The following error occurred when trying to set the"
" WSV {}: {}".format(wsv.name, err.decode()))
raise Exception(msg)
# If the type is not supported by the C API try to write the type to XML
# and read into ARTS workspace.
else:
try:
wsv.from_arts(value)
except:
raise Exception("Could not set variable since + " +
str(type(value)) +
" is neither supported by " +
"the C API nor arts XML IO.")
