luigi.contrib.dropbox module

luigi.contrib.dropbox.accept_trailing_slash_in_existing_dirpaths(func)[source]
luigi.contrib.dropbox.accept_trailing_slash(func)[source]
class luigi.contrib.dropbox.DropboxClient(token, user_agent='Luigi')[source]

Bases: luigi.target.FileSystem

Dropbox client for authentication, designed to be used by the DropboxTarget class.

Parameters:token (str) – Dropbox Oauth2 Token. See DropboxTarget for more information about generating a token
exists(path, *args, **kwargs)[source]

Return True if file or directory at path exist, False otherwise

Parameters:path (str) – a path within the FileSystem to check for existence.
remove(path, *args, **kwargs)[source]

Remove file or directory at location path

Parameters:
  • path (str) – a path within the FileSystem to remove.
  • recursive (bool) – if the path is a directory, recursively remove the directory and all of its descendants. Defaults to True.
mkdir(path, *args, **kwargs)[source]

Create directory at location path

Creates the directory at path and implicitly create parent directories if they do not already exist.

Parameters:
  • path (str) – a path within the FileSystem to create as a directory.
  • parents (bool) – Create parent directories when necessary. When parents=False and the parent directory doesn’t exist, raise luigi.target.MissingParentDirectory
  • raise_if_exists (bool) – raise luigi.target.FileAlreadyExists if the folder already exists.
isdir(path, *args, **kwargs)[source]

Return True if the location at path is a directory. If not, return False.

Parameters:path (str) – a path within the FileSystem to check as a directory.

Note: This method is optional, not all FileSystem subclasses implements it.

listdir(path, *args, **kwargs)[source]

Return a list of files rooted in path.

This returns an iterable of the files rooted at path. This is intended to be a recursive listing.

Parameters:path (str) – a path within the FileSystem to list.

Note: This method is optional, not all FileSystem subclasses implements it.

move(path, *args, **kwargs)[source]

Move a file, as one would expect.

copy(path, *args, **kwargs)[source]

Copy a file or a directory with contents. Currently, LocalFileSystem and MockFileSystem support only single file copying but S3Client copies either a file or a directory as required.

download_as_bytes(path)[source]
upload(tmp_path, dest_path)[source]
class luigi.contrib.dropbox.ReadableDropboxFile(path, client)[source]

Bases: object

Represents a file inside the Dropbox cloud which will be read

Parameters:
  • path (str) – Dropbpx path of the file to be read (always starting with /)
  • client (DropboxClient) – a DropboxClient object (initialized with a valid token)
read()[source]
close()[source]
readable()[source]
writable()[source]
seekable()[source]
class luigi.contrib.dropbox.AtomicWritableDropboxFile(path, client)[source]

Bases: luigi.target.AtomicLocalFile

Represents a file that will be created inside the Dropbox cloud

Parameters:
  • path (str) – Destination path inside Dropbox
  • client (DropboxClient) – a DropboxClient object (initialized with a valid token, for the desired account)
move_to_final_destination()[source]

After editing the file locally, this function uploads it to the Dropbox cloud

class luigi.contrib.dropbox.DropboxTarget(path, token, format=None, user_agent='Luigi')[source]

Bases: luigi.target.FileSystemTarget

A Dropbox filesystem target.

Create an Dropbox Target for storing data in a dropbox.com account

About the path parameter

The path must start with ‘/’ and should not end with ‘/’ (even if it is a directory). The path must not contain adjacent slashes (‘/files//img.jpg’ is an invalid path)

If the app has ‘App folder’ access, then / will refer to this app folder (which mean that there is no need to prepend the name of the app to the path) Otherwise, if the app has ‘full access’, then / will refer to the root of the Dropbox folder

About the token parameter:

The Dropbox target requires a valid OAuth2 token as a parameter (which means that a Dropbox API app must be created. This app can have ‘App folder’ access or ‘Full Dropbox’, as desired).

Information about generating the token can be read here:

Parameters:
  • path (str) – Remote path in Dropbox (starting with ‘/’).
  • token (str) – a valid OAuth2 Dropbox token.
  • format (luigi.Format) – the luigi format to use (e.g. luigi.format.Nop)
fs
temporary_path(**kwds)[source]

A context manager that enables a reasonably short, general and magic-less way to solve the Atomic Writes Problem.

  • On entering, it will create the parent directories so the temporary_path is writeable right away. This step uses FileSystem.mkdir().
  • On exiting, it will move the temporary file if there was no exception thrown. This step uses FileSystem.rename_dont_move()

The file system operations will be carried out by calling them on fs.

The typical use case looks like this:

class MyTask(luigi.Task):
    def output(self):
        return MyFileSystemTarget(...)

    def run(self):
        with self.output().temporary_path() as self.temp_output_path:
            run_some_external_command(output_path=self.temp_output_path)
open(mode)[source]

Open the FileSystem target.

This method returns a file-like object which can either be read from or written to depending on the specified mode.

Parameters:mode (str) – the mode r opens the FileSystemTarget in read-only mode, whereas w will open the FileSystemTarget in write mode. Subclasses can implement additional options.