Function is_generator

src/black/nodes.py:665–673

Return True if `node` holds a generator.

(node: LN)

def is_generator(node: LN) -> bool:
    """Return True if `node` holds a generator."""
    if node.type != syms.atom:
        return False
    gexp = unwrap_singleton_parenthesis(node)
    if gexp is None or gexp.type != syms.testlist_gexp:
        return False

    return any(child.type == syms.old_comp_for for child in gexp.children)


def is_one_sequence_between(