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+The ``File`` object
+===================
+
+The :mod:`django.core.files` module and its submodules contain built-in classes
+for basic file handling in Django.
+
+.. currentmodule:: django.core.files
+
+The ``File`` Class
+------------------
+
+.. class:: File(file_object)
+
+    The :class:`File` is a thin wrapper around Python's built-in file object
+    with some Django-specific additions. Internally, Django uses this class
+    any time it needs to represent a file.
+    
+    :class:`File` objects have the following attributes and methods:
+
+    .. attribute:: name
+
+        The name of file including the relative path from
+        :setting:`MEDIA_ROOT`.
+
+    .. attribute:: size
+
+        The size of the file in bytes.
+
+    .. attribute:: file
+
+        The underlying Python ``file`` object passed to
+        :class:`~django.core.files.File`.
+
+    .. attribute:: mode
+
+        The read/write mode for the file.
+
+    .. method:: open([mode=None])
+
+        Open or reopen the file (which by definition also does
+        ``File.seek(0)``). The ``mode`` argument allows the same values
+        as Python's standard ``open()``.
+
+        When reopening a file, ``mode`` will override whatever mode the file
+        was originally opened with; ``None`` means to reopen with the original
+        mode.
+
+    .. method:: read([num_bytes=None])
+
+        Read content from the file. The optional ``size`` is the number of
+        bytes to read; if not specified, the file will be read to the end.
+
+    .. method:: __iter__()
+
+        Iterate over the file yielding one line at a time.
+
+    .. method:: chunks([chunk_size=None])
+
+        Iterate over the file yielding "chunks" of a given size. ``chunk_size``
+        defaults to 64 KB.
+
+        This is especially useful with very large files since it allows them to
+        be streamed off disk and avoids storing the whole file in memory.
+
+    .. method:: multiple_chunks([chunk_size=None])
+
+        Returns ``True`` if the file is large enough to require multiple chunks
+        to access all of its content give some ``chunk_size``.
+
+    .. method:: write([content])
+
+        Writes the specified content string to the file. Depending on the
+        storage system behind the scenes, this content might not be fully
+        committed until ``close()`` is called on the file.
+
+    .. method:: close()
+
+        Close the file.
+
+    In addition to the listed methods, :class:`~django.core.files.File` exposes
+    the following attributes and methods of the underlying ``file`` object:
+    ``encoding``, ``fileno``, ``flush``, ``isatty``, ``newlines``,
+    ``read``, ``readinto``, ``readlines``, ``seek``, ``softspace``, ``tell``,
+    ``truncate``, ``writelines``, ``xreadlines``.
+
+.. currentmodule:: django.core.files.base
+
+The ``ContentFile`` Class
+-------------------------
+
+.. class:: ContentFile(File)
+
+    The ``ContentFile`` class inherits from :class:`~django.core.files.File`,
+    but unlike :class:`~django.core.files.File` it operates on string content,
+    rather than an actual file. For example::
+
+        from django.core.files.base import ContentFile
+
+        f1 = ContentFile("my string content")
+        f2 = ContentFile(u"my unicode content encoded as UTF-8".encode('UTF-8'))
+
+.. currentmodule:: django.core.files.images
+
+The ``ImageFile`` Class
+-----------------------
+
+.. class:: ImageFile(file_object)
+
+    Django provides a built-in class specifically for images.
+    :class:`django.core.files.images.ImageFile` inherits all the attributes
+    and methods of :class:`~django.core.files.File`, and additionally
+    provides the following:
+
+    .. attribute:: width
+
+        Width of the image in pixels.
+
+    .. attribute:: height
+
+        Height of the image in pixels.
+
+.. currentmodule:: django.core.files
+
+Additional methods on files attached to objects
+-----------------------------------------------
+
+Any :class:`File` that's associated with an object (as with ``Car.photo``,
+below) will also have a couple of extra methods:
+
+.. method:: File.save(name, content, [save=True])
+
+    Saves a new file with the file name and contents provided. This will not
+    replace the existing file, but will create a new file and update the object
+    to point to it. If ``save`` is ``True``, the model's ``save()`` method will
+    be called once the file is saved. That is, these two lines::
+
+        >>> car.photo.save('myphoto.jpg', contents, save=False)
+        >>> car.save()
+
+    are the same as this one line::
+
+        >>> car.photo.save('myphoto.jpg', contents, save=True)
+
+    Note that the ``content`` argument must be an instance of either
+    :class:`File` or of a subclass of :class:`File`, such as
+    :class:`ContentFile`.
+
+.. method:: File.delete([save=True])
+
+    Removes the file from the model instance and deletes the underlying file.
+    If ``save`` is ``True``, the model's ``save()`` method will be called once
+    the file is deleted.