expression.py 文件源码

def peval_call(state, ctx, func, args=[], keywords=[]):

    assert all(type(arg) != ast.Starred for arg in args)
    assert all(kw.arg is not None for kw in keywords)

    keyword_expressions = [kw.value for kw in keywords]

    state, results = map_peval_expression(
        state, dict(func=func, args=args, keywords=keyword_expressions), ctx)

    if all_known_values_or_none(results):
        values = map_get_value(results)
        kwds = {kw.arg: value for kw, value in zip(keywords, values['keywords'])}
        success, value = try_eval_call(
            values['func'], args=values['args'], keywords=kwds)
        if success:
            return state, KnownValue(value=value)

    state, nodes = map_reify(state, results)

    # restoring the keyword list
    nodes['keywords'] = [
        ast.keyword(arg=kw.arg, value=expr)
        for kw, expr in zip(keywords, nodes['keywords'])]

    return state, ast.Call(**nodes)