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"""MediaPart and related objects."""
from __future__ import annotations
import hashlib
from pptx.opc.package import Part
from pptx.util import lazyproperty
class MediaPart(Part):
"""A media part, containing an audio or video resource.
A media part generally has a partname matching the regex
`ppt/media/media[1-9][0-9]*.*`.
"""
@classmethod
def new(cls, package, media):
"""Return new |MediaPart| instance containing `media`.
`media` must be a |Media| object.
"""
return cls(
package.next_media_partname(media.ext),
media.content_type,
package,
media.blob,
)
@lazyproperty
def sha1(self):
"""The SHA1 hash digest for the media binary of this media part.
Example: `'1be010ea47803b00e140b852765cdf84f491da47'`
"""
return hashlib.sha1(self._blob).hexdigest()
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