normalizer.py 文件源码

 复制代码def normalize_compare(node):
    """Rewrites a compare expression to a `and` expression
    1 < 2 < 3 > 0
    1 < 2 and 2 < 3 and 3 > 0"""
    and_values = []
    left = node.left
    for (op, val) in zip(node.ops, node.comparators):
        comp = ast.Compare(ops=[op],
                           left=left,
                           comparators=[val],
                           lineno=node.lineno,
                           col_offset=node.col_offset)
        and_values.append(comp)
        left = val
    return ast.BoolOp(op=ast.And(),
                      values=and_values,
                      lineno=node.lineno,
                      col_offset=node.col_offset)