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TypeError: __init__() 在 argparse 中得到了一个意外的关键字参数“type"

分类: 技术问答 • 2022-02-25 21:20:30

TypeError: __init__() 在 argparse 中得到了一个意外的关键字参数“type

问题描述：

嘿，我正在使用 argparse 来尝试生成季度报告.代码如下所示:

Hey so I'm using argparse to try and generate a quarterly report. This is what the code looks like:

parser  = argparse.ArgumentParser()

parser.add_argument('-q', "--quarter",  action='store_true', type=int, help="Enter a Quarter number: 1,2,3, or 4 ")
parser.add_argument('-y', "--year", action='store_true',type=str,help="Enter a year in the format YYYY ")
args = parser.parse_args()

我收到的错误是:

TypeError: init() 得到一个意外的关键字参数 'type'

TypeError: init() got an unexpected keyword argument 'type'

据我所知，argparse 文档类型是 add_argument 函数的参数之一.我尝试删除它并将代码更新为:

as far as I can tell from the argparse documentation type is one of the parameters of the add_argument function. I tried removing this and updating the code to :

parser  = argparse.ArgumentParser()

parser.add_argument('-q', "--quarter",  action='store_true', help="Enter a Quarter number: 1,2,3, or 4 ")
parser.add_argument('-y', "--year", action='store_true',help="Enter a year in the format YYYY ")
args = parser.parse_args()

然后我尝试使用:python scriptname.py -q 1 -y 2015 运行它，它给了我以下错误:

I then tried to run it with: python scriptname.py -q 1 -y 2015 and it is giving me the following error:

错误:无法识别的参数:1 2015

error:unrecognized arguments: 1 2015

我也不知道为什么会这样.任何人都可以对此有所了解.

I don't know why that is either. Can anyone please shed some light on this.

答

action="store_true" 的意思是，如果参数在命令行中给出，则 Truecode> value 应该存储在解析器中.您真正想要的是存储给定的年份(作为字符串)和季度(作为整数).

What action="store_true" means is that if the argument is given on the command line then a True value should be stored in the parser. What you actually want is to store the given year (as a string) and quarter (as an int).

parser  = argparse.ArgumentParser()

parser.add_argument('-q', "--quarter", type=int, help="Enter a Quarter number: 1,2,3, or 4 ")
parser.add_argument('-y', "--year", type=str, help="Enter a year in the format YYYY ")
args = parser.parse_args()

当您指定 action='store_true 时，argparse 在内部实例化一个 _StoreAction 实例，其构造函数不接受 type 参数(因为它将总是一个布尔值(真/假)).您不能同时提供 action="store_true" 和 'type'.

When you specify action='store_true argparse is internally instantiating a _StoreAction instance whose constructor does not accept a type parameter (since it will always be a boolean (True/False)). You cannot supply action="store_true" and 'type' at the same time.

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