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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_cursors(source, spelling):
 """Obtain all cursors from a source object with a specific spelling. This provides a convenient search mechanism to find all cursors with specific spelling within a source. The first argument can be either a TranslationUnit or Cursor instance. If no cursors are found, an empty list is returned. """

    cursors = []
    children = []
    if isinstance(source, Cursor):
        children = source.get_children()
    else:
        # Assume TU
        children = source.cursor.get_children()

    for cursor in children:
        if cursor.spelling == spelling:
            cursors.append(cursor)

        # Recurse into children.
        cursors.extend(get_cursors(cursor, spelling))

    return cursors