我发现这种理解对于整理列表非常有效:>>> [item for sublist in list_of_listsfor item in sublist]比起使用itertools.chain(),我更喜欢这一点,但我就是不明白。genexpr> at 0x7ff919fdfdc0>]
>>> [item f
dump, PyCF_ONLY_AST
print(dump(compile(s, '<String>', 'exec', pfcf|PyCF_ONLY_AST))TypeError: expected some sort of expr, but got <_ast.Expr object at 0x101812c10>
因此,我运行了前面提到的(