def iter_child_nodes(node):
    for name, field in iter_fields(node):
        if isinstance(field, AST):
            yield field
        elif isinstance(field, list):
            for item in field:
                if isinstance(item, AST):
                    yield item
Calculates the nth moment about the mean for a sample.
dataset/ETHPy150Open eBay/restcommander/play-1.2.4/python/Lib/ast.py/iter_child_nodes--crossover with--dataset/ETHPy150Open scipy/scipy/scipy/stats/mstats_basic.py/moment