notice

This is unreleased documentation for Rasa Open Source Documentation Master/Unreleased version.
For the latest released documentation, see the latest version (2.8.x).

Version: Master/Unreleased

rasa.shared.utils.io

raise_warning

def raise_warning(message: Text, category: Optional[Type[Warning]] = None, docs: Optional[Text] = None, **kwargs: Any, ,) -> None

Emit a warnings.warn with sensible defaults and a colored warning msg.

write_text_file

def write_text_file(content: Text, file_path: Union[Text, Path], encoding: Text = DEFAULT_ENCODING, append: bool = False) -> None

Writes text to a file.

Arguments:

  • content - The content to write.
  • file_path - The path to which the content should be written.
  • encoding - The encoding which should be used.
  • append - Whether to append to the file or to truncate the file.

read_file

def read_file(filename: Union[Text, Path], encoding: Text = DEFAULT_ENCODING) -> Any

Read text from a file.

read_json_file

def read_json_file(filename: Union[Text, Path]) -> Any

Read json from a file.

list_directory

def list_directory(path: Text) -> List[Text]

Returns all files and folders excluding hidden files.

If the path points to a file, returns the file. This is a recursive implementation returning files in any depth of the path.

list_files

def list_files(path: Text) -> List[Text]

Returns all files excluding hidden files.

If the path points to a file, returns the file.

list_subdirectories

def list_subdirectories(path: Text) -> List[Text]

Returns all folders excluding hidden files.

If the path points to a file, returns an empty list.

deep_container_fingerprint

def deep_container_fingerprint(obj: Union[List[Any], Dict[Any, Any], Any], encoding: Text = DEFAULT_ENCODING) -> Text

Calculate a hash which is stable, independent of a containers key order.

Works for lists and dictionaries. For keys and values, we recursively call hash(...) on them. Keep in mind that a list with keys in a different order will create the same hash!

Arguments:

  • obj - dictionary or list to be hashed.
  • encoding - encoding used for dumping objects as strings

Returns:

hash of the container.

get_dictionary_fingerprint

def get_dictionary_fingerprint(dictionary: Dict[Any, Any], encoding: Text = DEFAULT_ENCODING) -> Text

Calculate the fingerprint for a dictionary.

The dictionary can contain any keys and values which are either a dict, a list or a elements which can be dumped as a string.

Arguments:

  • dictionary - dictionary to be hashed
  • encoding - encoding used for dumping objects as strings

Returns:

The hash of the dictionary

get_list_fingerprint

def get_list_fingerprint(elements: List[Any], encoding: Text = DEFAULT_ENCODING) -> Text

Calculate a fingerprint for an unordered list.

Arguments:

  • elements - unordered list
  • encoding - encoding used for dumping objects as strings

Returns:

the fingerprint of the list

get_text_hash

def get_text_hash(text: Text, encoding: Text = DEFAULT_ENCODING) -> Text

Calculate the md5 hash for a text.

json_to_string

def json_to_string(obj: Any, **kwargs: Any) -> Text

Dumps a JSON-serializable object to string.

Arguments:

  • obj - JSON-serializable object.
  • kwargs - serialization options. Defaults to 2 space indentation and disable escaping of non-ASCII characters.

Returns:

The objects serialized to JSON, as a string.

fix_yaml_loader

def fix_yaml_loader() -> None

Ensure that any string read by yaml is represented as unicode.

replace_environment_variables

def replace_environment_variables() -> None

Enable yaml loader to process the environment variables in the yaml.

read_yaml

def read_yaml(content: Text, reader_type: Union[Text, List[Text]] = "safe") -> Any

Parses yaml from a text.

Arguments:

  • content - A text containing yaml content.
  • reader_type - Reader type to use. By default "safe" will be used.

Raises:

  • ruamel.yaml.parser.ParserError - If there was an error when parsing the YAML.

read_yaml_file

def read_yaml_file(filename: Union[Text, Path]) -> Union[List[Any], Dict[Text, Any]]

Parses a yaml file.

Raises an exception if the content of the file can not be parsed as YAML.

Arguments:

  • filename - The path to the file which should be read.

Returns:

Parsed content of the file.

write_yaml

def write_yaml(data: Any, target: Union[Text, Path, StringIO], should_preserve_key_order: bool = False) -> None

Writes a yaml to the file or to the stream

Arguments:

  • data - The data to write.
  • target - The path to the file which should be written or a stream object
  • should_preserve_key_order - Whether to force preserve key order in data.

is_key_in_yaml

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.

convert_to_ordered_dict

def convert_to_ordered_dict(obj: Any) -> Any

Convert object to an OrderedDict.

Arguments:

  • obj - Object to convert.

Returns:

An OrderedDict with all nested dictionaries converted if obj is a dictionary, otherwise the object itself.

is_logging_disabled

def is_logging_disabled() -> bool

Returns True if log level is set to WARNING or ERROR, False otherwise.

create_directory_for_file

def create_directory_for_file(file_path: Union[Text, Path]) -> None

Creates any missing parent directories of this file path.

dump_obj_as_json_to_file

def dump_obj_as_json_to_file(filename: Union[Text, Path], obj: Any) -> None

Dump an object as a json string to a file.

dump_obj_as_yaml_to_string

def dump_obj_as_yaml_to_string(obj: Any, should_preserve_key_order: bool = False) -> Text

Writes data (python dict) to a yaml string.

Arguments:

  • obj - The object to dump. Has to be serializable.
  • should_preserve_key_order - Whether to force preserve key order in data.

Returns:

The object converted to a YAML string.

create_directory

def create_directory(directory_path: Text) -> None

Creates a directory and its super paths.

Succeeds even if the path already exists.

raise_deprecation_warning

def raise_deprecation_warning(message: Text, warn_until_version: Text = NEXT_MAJOR_VERSION_FOR_DEPRECATIONS, docs: Optional[Text] = None, **kwargs: Any, ,) -> None

Thin wrapper around raise_warning() to raise a deprecation warning. It requires a version until which we'll warn, and after which the support for the feature will be removed.

read_validated_yaml

def read_validated_yaml(filename: Union[Text, Path], schema: Text) -> Any

Validates YAML file content and returns parsed content.

Arguments:

  • filename - The path to the file which should be read.
  • schema - The path to the schema file which should be used for validating the file content.

Returns:

The parsed file content.

Raises:

  • YamlValidationException - In case the model configuration doesn't match the expected schema.

read_config_file

def read_config_file(filename: Union[Path, Text]) -> Dict[Text, Any]

Parses a yaml configuration file. Content needs to be a dictionary.

Arguments:

  • filename - The path to the file which should be read.

Raises:

  • YamlValidationException - In case file content is not a Dict.

Returns:

Parsed config file.

read_model_configuration

def read_model_configuration(filename: Union[Path, Text]) -> Dict[Text, Any]

Parses a model configuration file.

Arguments:

  • filename - The path to the file which should be read.

Raises:

  • YamlValidationException - In case the model configuration doesn't match the expected schema.

Returns:

Parsed config file.

is_subdirectory

def is_subdirectory(path: Text, potential_parent_directory: Text) -> bool

Checks if path is a subdirectory of potential_parent_directory.

Arguments:

  • path - Path to a file or directory.
  • potential_parent_directory - Potential parent directory.

Returns:

True if path is a subdirectory of potential_parent_directory.

random_string

def random_string(length: int) -> Text

Returns a random string of given length.