True if there is a child element with the given id.

Remove a child.

Return the child with given id.

Initialize the class.

Iterate over children.

Return the number of children.

Reset the full_id.

Sets the full_id of this entity and recursively of all its children to None. This means that it will be newly generated at the next call to get_full_id.

Add a child to the Entity.

Remove a child.

Detach the parent.

Return the full id.

The full id is a tuple containing all id’s starting from the top object (Structure) down to the current object. A full id for a Residue object e.g. is something like:

(“1abc”, 0, “A”, (“ “, 10, “A”))

This corresponds to:

Structure with id “1abc” Model with id 0 Chain with id “A” Residue with id (“ “, 10, “A”)

The Residue id indicates that the residue is not a hetero-residue (or a water) because it has a blank hetero field, that its sequence identifier is 10 and its insertion code “A”.

Return the id.

Return iterator over children.

Return level in hierarchy.

A - atom R - residue C - chain M - model S - structure

Return a copy of the list of children.

Return the parent Entity object.

True if a child with given id exists.

Change the id of this entity.

This will update the child_dict of this entity’s parent and invalidate all cached full ids involving this entity.

@raises: ValueError

Add a child to the Entity at a specified position.

Set the parent Entity object.

Apply rotation and translation to the atomic coordinates.

Example:

         >>> rotation=rotmat(pi, Vector(1, 0, 0))
         >>> translation=array((0, 0, 1), 'f')
         >>> entity.transform(rotation, translation)

:param rot: A right multiplying rotation matrix :type rot: 3x3 Numeric array

:param tran: the translation vector :type tran: size 3 Numeric array