def layer_from_name(layer_name):
"""Return the layer for the corresponding layer_name by discovering
and importing the necessary module if necessary.
Note that a name -> layer cache is maintained by name_from_layer
to allow locating layers in cases where it would otherwise be
impossible.
"""
if layer_name in _layer_name_cache:
return _layer_name_cache[layer_name]
layer_names = layer_name.split(".")
layer_module, module_layer_name = layer_names[:-1], layer_names[-1]
module_name = ".".join(layer_module)
module = import_name(module_name)
try:
return getattr(module, module_layer_name)
except AttributeError, e:
# the default error is very uninformative:
# AttributeError: 'module' object has no attribute 'DemoLayer'
# it doesn't say *which* module
raise AttributeError("module %r has no attribute %r" % (module_name, module_layer_name))
def layer_from_name(layer_name):
"""Return the layer for the corresponding layer_name by discovering
and importing the necessary module if necessary.
Note that a name -> layer cache is maintained by name_from_layer
to allow locating layers in cases where it would otherwise be
impossible.
"""
if layer_name in _layer_name_cache:
return _layer_name_cache[layer_name]
layer_names = layer_name.split('.')
layer_module, module_layer_name = layer_names[:-1], layer_names[-1]
module_name = '.'.join(layer_module)
module = import_name(module_name)
try:
return getattr(module, module_layer_name)
except AttributeError:
# the default error is very uninformative:
# AttributeError: 'module' object has no attribute 'DemoLayer'
# it doesn't say *which* module
raise AttributeError('module %r has no attribute %r' %
(module_name, module_layer_name))