def __init__(self, formulas=None):
super(Formulas, self).__init__(formulas)
#: dictionary of formula sources added to the Formula layer
self.formula_sources = {}
#: formula source objects
self.formula_obj = {}
#: formulas
self.formulas = FormulaRegistry()
class Formulas(Layer):
"""
Layer containing formulas.
"""
def __init__(self, formulas=None):
super(Formulas, self).__init__(formulas)
#: dictionary of formula sources added to the Formula layer
self.formula_sources = {}
#: formula source objects
self.formula_obj = {}
#: formulas
self.formulas = FormulaRegistry()
# layers are initialized by the model
def add(self, formula_source, module, package=None):
"""
Import module (from package) with formulas, import formulas and add
them to formula registry.
:param formula_source: Name of the formula source to add/open.
:param module: Module containing formula source.
:param package: [Optional] Package of formula source module.
.. seealso::
:func:`importlib.import_module`
"""
# import module
mod = importlib.import_module(module, package)
# get formula source class definition from module
if formula_source.startswith('_'):
err_msg = 'No "%s" attribute in "%s".' % (formula_source, mod)
raise AttributeError(err_msg)
self.formula_sources[formula_source] = getattr(mod, formula_source)
# only update layer info if it is missing!
if formula_source not in self.layer:
# copy formula source parameters to :attr:`Layer.layer`
self.layer[formula_source] = {'module': module, 'package': package}
self.formula_obj[formula_source] = \
self.formula_sources[formula_source]()
# register formula and linearity in registry
formula_src_obj = self.formula_obj[formula_source]
self.formulas.register(formula_src_obj.formulas,
formula_src_obj.islinear)
def open(self, formula_source, module, package=None):
self.add(formula_source, module, package=None)
def load(self):
"""
Add formula_source to layer.
"""
for k, v in self.layer.iteritems():
self.add(k, v['module'], v.get('package'))
class Formulas(Layer):
"""
Layer containing formulas.
"""
def __init__(self, formulas=None):
super(Formulas, self).__init__(formulas)
#: dictionary of formula sources added to the Formula layer
self.formula_sources = {}
#: formula source objects
self.formula_obj = {}
#: formulas
self.formulas = FormulaRegistry()
# layers are initialized by the model
def add(self, formula_source, module, package=None):
"""
Import module (from package) with formulas, import formulas and add
them to formula registry.
:param formula_source: Name of the formula source to add/open.
:param module: Module containing formula source.
:param package: [Optional] Package of formula source module.
.. seealso::
:func:`importlib.import_module`
"""
# import module
mod = importlib.import_module(module, package)
# get formula source class definition from module
if formula_source.startswith('_'):
err_msg = 'No "%s" attribute in "%s".' % (formula_source, mod)
raise AttributeError(err_msg)
self.formula_sources[formula_source] = getattr(mod, formula_source)
# only update layer info if it is missing!
if formula_source not in self.layer:
# copy formula source parameters to :attr:`Layer.layer`
self.layer[formula_source] = {'module': module, 'package': package}
self.formula_obj[formula_source] = \
self.formula_sources[formula_source]()
# register formula and linearity in registry
formula_src_obj = self.formula_obj[formula_source]
self.formulas.register(formula_src_obj.formulas,
formula_src_obj.islinear)
def open(self, formula_source, module, package=None):
self.add(formula_source, module, package=None)
def load(self):
"""
Add formula_source to layer.
"""
for k, v in self.layer.iteritems():
self.add(k, v['module'], v.get('package'))
def __init__(self, formulas=None):
super(Formulas, self).__init__(formulas)
#: dictionary of formula sources added to the Formula layer
self.formula_sources = {}
#: formula source objects
self.formula_obj = {}
#: formulas
self.formulas = FormulaRegistry()
