mnemosine.exceptions.FileNotFound

Kind: class

Signature

class FileNotFound

Documentation

Raised when a File has no stored content to read.

Either the file node has never had content written (write() not yet called) or the underlying blob file is missing from the blob store.

Attributes: node_id (str): The id of the file node without content.

Example:

>>> from mnemosine import Storage, FileNotFound
>>> with Storage(":memory:") as db:
...     f = db.file("empty.txt")
...     f.save()
...     try:
...         f.read()
...     except FileNotFound:
...         print("no content yet")
no content yet