Source

django-storages / django_storages / OverwriteStorage.py

import os

from django.conf import settings
from django.core.files.storage import FileSystemStorage

class OverwriteStorage(FileSystemStorage):
    
    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.
        
        Comes from http://www.djangosnippets.org/snippets/976/
        (even if it already exists in S3Storage for ages)
        """
        # If the filename already exists, remove it as if it was a true file system
        if self.exists(name):
            os.remove(os.path.join(settings.MEDIA_ROOT, name))
        return name
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