Python 3 list(dictionary.keys()) 引发错误。我究竟做错了什么？

Question

字典:

error['extras'] = {'expiration_month': 'Invalid field [expiration_month] - Missing field "expiration_month"'}

代码:

list(error['extras'].keys())

结果:

*** Error in argument: "(error['extras'].keys())"

如果相关，我将在一个被 pdb.set_trace() 暂停的 django 进程中运行这段代码。

Answer 1

我认为问题在于 list is a pdb debugger command .文档说明如下:

Commands that the debugger doesn’t recognize are assumed to be Python statements and are executed in the context of the program being debugged. Python statements can also be prefixed with an exclamation point (!).

所以你可以尝试像这样为 list 添加前缀:

!list(error['extras'].keys())