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Classes representing uploaded files.
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An abstract uploaded file (``TemporaryUploadedFile`` and
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represents some file data that the user submitted with a form.
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A file uploaded to a temporary location (i.e. stream-to-disk).
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A file uploaded into memory (i.e. stream-to-memory).
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A simple representation of a file, which just has content, size, and a name.
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Create a SimpleUploadedFile object from a dictionary with keys:
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