Retrieves the target names

def target_names(targets):
    """Retrieves the target names"""
    names = []
    for entry in targets:
        if isinstance(entry, ast.Name):
            names.append(entry.id)
        elif isinstance(entry, ast.Tuple):
            for element in entry.elts:
                if isinstance(element, ast.Name):
                    names.append(element.id)

    return names