classResource

class Resource(

urls: tuple[str, ...],

path: Path,

hashes: Mapping[str, str] = {},

size: int | None = None,

)

A file to download: where from, where to, and how to verify it.

urls

Download locations, tried in order.

Type:

tuple[str, …]

path

The destination.

Type:

Path

hashes

Expected digests keyed by algorithm name.

Type:

Mapping[str, str]

size

The expected size in bytes, or None if unknown.

Type:

int | None

classmethod of(

url: str,

path: Path,

hashes: Mapping[str, str] | None = None,

size: int | None = None,

) → Resource

Create a resource with one URL.

Parameters:

• url (str) – The download location.

• path (Path) – The destination.

• hashes (Mapping[str, str] | None) – Expected digests keyed by algorithm name.

• size (int | None) – The expected size in bytes, or None if unknown.

Returns:

The resource.

Return type:

Resource

is_present() → bool

Return whether the destination already passes the size and hash checks.

With no size or hashes to check, any existing file counts as present.