def load(config_file: Optional[Union[Text, Dict]]) -> List["Policy"]:
"""Load policy data stored in the specified file."""
from rasa.core.policies.ensemble import PolicyEnsemble
if not config_file:
raise FileNotFoundException(
f"The provided configuration file path does not seem to be valid. "
f"The file '{os.path.abspath(config_file)}' could not be found.")
config_data = {}
if isinstance(config_file, str) and os.path.isfile(config_file):
config_data = rasa.shared.utils.io.read_model_configuration(
config_file)
elif isinstance(config_file, Dict):
config_data = config_file
return PolicyEnsemble.from_dict(config_data)
def read_file(filename: Union[Text, Path],
encoding: Text = DEFAULT_ENCODING) -> Any:
"""Read text from a file."""
try:
with open(filename, encoding=encoding) as f:
return f.read()
except FileNotFoundError:
raise FileNotFoundException(
f"Failed to read file, "
f"'{os.path.abspath(filename)}' does not exist.")
except UnicodeDecodeError:
raise FileIOException(
f"Failed to read file '{os.path.abspath(filename)}', "
f"could not read the file using {encoding} to decode "
f"it. Please make sure the file is stored with this "
f"encoding.")
def is_key_in_yaml(file_path: Union[Text, Path], *keys: Text) -> bool:
"""Checks if any of the keys is contained in the root object of the yaml file.
Arguments:
file_path: path to the yaml file
keys: keys to look for
Returns:
`True` if at least one of the keys is found, `False` otherwise.
Raises:
FileNotFoundException: if the file cannot be found.
"""
try:
with open(file_path) as file:
return any(
any(line.lstrip().startswith(f"{key}:") for key in keys)
for line in file)
except FileNotFoundError:
raise FileNotFoundException(
f"Failed to read file, "
f"'{os.path.abspath(file_path)}' does not exist.")