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# hashing
# `prefect.utilities.hashing`
## Functions
### `stable_hash`
```python theme={null}
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.
### `file_hash`
```python theme={null}
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
### `hash_objects`
```python theme={null}
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
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