File objectLink to this heading#The django.core.files module and its submodules contain built-in classes\nfor basic file handling in Django.
File classLink to this heading#The File class is a thin wrapper around a Python\nfile object with some Django-specific additions.\nInternally, Django uses this class when it needs to represent a file.
File objects have the following attributes and methods:
The name of the file including the relative path from\nMEDIA_ROOT.
The size of the file in bytes.
\nThe underlying file object that this class wraps.
\n\nThe read/write mode for the file.
\nOpen or reopen the file (which also does File.seek(0)).\nThe mode argument allows the same values\nas Python’s built-in open(). *args and **kwargs\nare passed after mode to Python’s built-in open().
When reopening a file, mode will override whatever mode the file\nwas originally opened with; None means to reopen with the original\nmode.
It can be used as a context manager, e.g. with file.open() as f:.
Iterate over the file yielding one line at a time.
\nIterate over the file yielding “chunks” of a given size. chunk_size\ndefaults to 64 KB.
This is especially useful with very large files since it allows them to\nbe streamed off disk and avoids storing the whole file in memory.
\nReturns True if the file is large enough to require multiple chunks\nto access all of its content give some chunk_size.
Close the file.
\nIn addition to the listed methods, File exposes\nthe following attributes and methods of its file object:\nencoding, fileno, flush, isatty, newlines, read,\nreadinto, readline, readlines, seek, tell,\ntruncate, write, writelines, readable(), writable(),\nand seekable().
ContentFile classLink to this heading#The ContentFile class inherits from File,\nbut unlike File it operates on string content\n(bytes also supported), rather than an actual file. For example:
from django.core.files.base import ContentFile\n\nf1 = ContentFile("esta frase está en español")\nf2 = ContentFile(b"these are bytes")\nImageFile classLink to this heading#Django provides a built-in class specifically for images.\ndjango.core.files.images.ImageFile inherits all the attributes\nand methods of File, and additionally\nprovides the following:
Width of the image in pixels.
\nHeight of the image in pixels.
\nAny File that is associated with an object (as with Car.photo,\nbelow) will also have a couple of extra methods:
Saves a new file with the file name and contents provided. This will not\nreplace the existing file, but will create a new file and update the object\nto point to it. If save is True, the model’s save() method will\nbe called once the file is saved. That is, these two lines:
>>> car.photo.save("myphoto.jpg", content, save=False)\n>>> car.save()\nare equivalent to:
\n>>> car.photo.save("myphoto.jpg", content, save=True)\nNote that the content argument must be an instance of either\nFile or of a subclass of File, such as\nContentFile.
Removes the file from the model instance and deletes the underlying file.\nIf save is True, the model’s save() method will be called once\nthe file is deleted.