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import importlib
import torch
def find_model_using_name(model_name):
# Given the option --model [modelname],
# the file "models/modelname_model.py"
# will be imported.
model_filename = "models." + model_name + "_model"
modellib = importlib.import_module(model_filename)
# In the file, the class called ModelNameModel() will
# be instantiated. It has to be a subclass of torch.nn.Module,
# and it is case-insensitive.
model = None
target_model_name = model_name.replace('_', '') + 'model'
for name, cls in modellib.__dict__.items():
if name.lower() == target_model_name.lower() \
and issubclass(cls, torch.nn.Module):
model = cls
if model is None:
print("In %s.py, there should be a subclass of torch.nn.Module with class name that matches %s in lowercase." % (model_filename, target_model_name))
exit(0)
return model
def get_option_setter(model_name):
model_class = find_model_using_name(model_name)
return model_class.modify_commandline_options
def create_model(opt):
model = find_model_using_name(opt.model)
instance = model(opt)
print("model [%s] was created" % (type(instance).__name__))
return instance
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