说明

有些时候我们不清楚python函数的具体签名时候调用可能报错这里就是介绍一种简单的方法来获取函数签名参数

语法

获取函数参数签名可以使用

组件.函数.__signature__

示例

我想要获取streamlit.text_input函数的参数签名

$ python                                                                                                     
Python 3.10.12 (main, Jun 11 2023, 05:26:28) [GCC 11.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import streamlit
>>> print(streamlit.text_input.__signature__)
(self, label: 'str', value: 'str | SupportsStr | None' = '', max_chars: 'int | None' = None, key: 'Key | None' = None, type: "Literal['default', 'password']" = 'default', help: 'str | None' = None, autocomplete: 'str | None' = None, on_change: 'WidgetCallback | None' = None, args: 'WidgetArgs | None' = None, kwargs: 'WidgetKwargs | None' = None, *, placeholder: 'str | None' = None, disabled: 'bool' = False, label_visibility: 'LabelVisibility' = 'visible') -> 'str | None'
>>> 
>>> exit()

这里结束了,是不是很简单

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