'Updates the values from the given object.  An object can be of one
of the following two types:
-   a string: in this case the object with that name will be imported
-   an actual object reference: that object is used directly
Objects are usually either modules or classes. :meth:`from_object`
loads only the uppercase attributes of the module/class. A ``dict``
object will not work with :meth:`from_object` because the keys of a
``dict`` are not attributes of the ``dict`` class.
Example of module-based configuration::
app.config.from_object(\'yourapplication.default_config\')
from yourapplication import default_config
app.config.from_object(default_config)
You should not use this function to load the actual configuration but
rather configuration defaults.  The actual config should be loaded
with :meth:`from_pyfile` and ideally from a location not within the
package because the package might be installed system wide.
See :ref:`config-dev-prod` for an example of class-based configuration
using :meth:`from_object`.
:param obj: an import name or object'

def from_object(self, obj):

    if isinstance(obj, string_types):
        obj = import_string(obj)
    for key in dir(obj):
        if key.isupper():
            self[key] = getattr(obj, key)
