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prefect.utilities.hashing

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Functions

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stable_hash 

stable_hash(*args: Union[str, bytes]) -> str
Given some arguments, produces a stable 64-bit hash of their contents. Supports bytes and strings. Strings will be UTF-8 encoded. Args:
  • *args: Items to include in the hash.
  • hash_algo: Hash algorithm from hashlib to use.
Returns:
  • A hex hash.

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file_hash 

file_hash(path: str, hash_algo: Callable[..., Any] = _md5) -> str
Given a path to a file, produces a stable hash of the file contents. Args:
  • path: the path to a file
  • hash_algo: Hash algorithm from hashlib to use.
Returns:
  • a hash of the file contents

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hash_objects 

hash_objects(*args: Any, **kwargs: Any) -> Optional[str]
Attempt to hash objects by dumping to JSON or serializing with cloudpickle. Args:
  • *args: Positional arguments to hash
  • hash_algo: Hash algorithm to use
  • raise_on_failure: If True, raise exceptions instead of returning None
  • **kwargs: Keyword arguments to hash
Returns:
  • A hash string or None if hashing failed
Raises:
  • HashError: If objects cannot be hashed and raise_on_failure is True