Provides an argument parser and a set of default command line options for using the ParlAI package.


From import path string, returns the class specified. For example, the string ‘parlai.agents.drqa.drqa:SimpleDictionaryAgent’ returns <class ‘parlai.agents.drqa.drqa.SimpleDictionaryAgent’>.


Inverse of params.str2class().

class parlai.core.params.ParlaiParser(add_parlai_args=True, add_model_args=False, model_argv=None)

Pseudo-extension of argparse which sets a number of parameters for the ParlAI framework. More options can be added specific to other modules by passing this object and calling add_arg() or add_argument() on it.

For example, see parlai.core.dict.DictionaryAgent.add_cmdline_args.

__init__(add_parlai_args=True, add_model_args=False, model_argv=None)

Initializes the ParlAI argparser. - add_parlai_args (default True) initializes the default arguments for ParlAI package, including the data download paths and task arguments. - add_model_args (default False) initializes the default arguments for loading models, including initializing arguments from that model. - model_argv (default None uses sys.argv) specifies the list of arguments which includes the model name (e.g. -m drqa).

parse_args(args=None, namespace=None, print_args=True)

Parses the provided arguments and returns a dictionary of the args. We specifically remove items with None as values in order to support the style opt.get(key, default), which would otherwise return None.


Print out all the arguments in this parser.