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django-storages / storages / backends / overwrite.py

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from django.core.files.storage import FileSystemStorage


class OverwriteStorage(FileSystemStorage):
    """
    Comes from http://www.djangosnippets.org/snippets/976/
    (even if it already exists in S3Storage for ages)

    See also Django #4339, which might add this functionality to core.
    """

    def get_available_name(self, name):
        """
        Returns a filename that's free on the target storage system, and
        available for new content to be written to.
        """
        if self.exists(name):
            self.delete(name)
        return name