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from calibre.gui2.widgets import IMAGE_EXTENSIONS
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from calibre.gui2.dialogs.metadata_single import MetadataSingleDialog
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from calibre.gui2.dialogs.metadata_bulk import MetadataBulkDialog
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from calibre.gui2.tools import convert_single_ebook, convert_bulk_ebook, \
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fetch_scheduled_recipe, generate_catalog
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from calibre.constants import preferred_encoding, filesystem_encoding, \