streamlit 下拉框的文本和选项框放在一行上显示

rsj0315

streamlit 下拉框的文本和选项框放在一行上显示，是否可以？如何设置

isdkz

可以将下拉框的文本和选项框放在一行上显示，可以使用  streamlit.beta_columns()  函数将页面分成多列，然后将下拉框放在需要的列中。

以下是示例代码：

1. import streamlit as st
   
2. 
   
3. # 使用 beta_columns 将页面分成两列
   
4. col1, col2 = st.beta_columns(2)
   
5. 
   
6. # 在第一列中添加文本
   
7. with col1:
   
8.     st.write("下拉框：")
   
9. 
   
10. # 在第二列中添加下拉框
    
11. with col2:
    
12.     option = st.selectbox("", ["选项1", "选项2", "选项3"])
    
13. 
    
14. # 隐藏下拉框的文本
    
15. st.markdown("<style>div.row-widget.stRadio > div{flex-direction:row;}</style>", unsafe_allow_html=True)
    

复制代码

在上述代码中，我们将页面分成两列，将下拉框放在第二列中，并使用 CSS 隐藏了下拉框的文本。这样，下拉框的文本和选项框就可以在一行上显示了。

rsj0315

@isdkz 看看效果

rsj0315

1. def selectbox(
   
2.         self,
   
3.         label: str,
   
4.         options: OptionSequence[T],
   
5.         index: int = 0,
   
6.         format_func: Callable[[Any], Any] = str,
   
7.         key: Optional[Key] = None,
   
8.         help: Optional[str] = None,
   
9.         on_change: Optional[WidgetCallback] = None,
   
10.         args: Optional[WidgetArgs] = None,
    
11.         kwargs: Optional[WidgetKwargs] = None,
    
12.         *,  # keyword-only arguments:
    
13.         disabled: bool = False,
    
14.         label_visibility: LabelVisibility = "visible",
    
15.     ) -> Optional[T]:
    
16.         r"""Display a select widget.
    
17. 
    
18.         Parameters
    
19.         ----------
    
20.         label : str
    
21.             A short label explaining to the user what this select widget is for.
    
22.             The label can optionally contain Markdown and supports the following
    
23.             elements: Bold, Italics, Strikethroughs, Inline Code, Emojis, and Links.
    
24. 
    
25.             This also supports:
    
26. 
    
27.             * Emoji shortcodes, such as ``:+1:``  and ``:sunglasses:``.
    
28.               For a list of all supported codes,
    
29.               see https://share.streamlit.io/streamlit/emoji-shortcodes.
    
30. 
    
31.             * LaTeX expressions, by wrapping them in "$" or "$$" (the "$$"
    
32.               must be on their own lines). Supported LaTeX functions are listed
    
33.               at https://katex.org/docs/supported.html.
    
34. 
    
35.             * Colored text, using the syntax ``:color[text to be colored]``,
    
36.               where ``color`` needs to be replaced with any of the following
    
37.               supported colors: blue, green, orange, red, violet.
    
38. 
    
39.             Unsupported elements are unwrapped so only their children (text contents) render.
    
40.             Display unsupported elements as literal characters by
    
41.             backslash-escaping them. E.g. ``1\. Not an ordered list``.
    
42. 
    
43.             For accessibility reasons, you should never set an empty label (label="")
    
44.             but hide it with label_visibility if needed. In the future, we may disallow
    
45.             empty labels by raising an exception.
    
46.         options : Sequence, numpy.ndarray, pandas.Series, pandas.DataFrame, or pandas.Index
    
47.             Labels for the select options. This will be cast to str internally
    
48.             by default. For pandas.DataFrame, the first column is selected.
    
49.         index : int
    
50.             The index of the preselected option on first render.
    
51.         format_func : function
    
52.             Function to modify the display of the labels. It receives the option
    
53.             as an argument and its output will be cast to str.
    
54.         key : str or int
    
55.             An optional string or integer to use as the unique key for the widget.
    
56.             If this is omitted, a key will be generated for the widget
    
57.             based on its content. Multiple widgets of the same type may
    
58.             not share the same key.
    
59.         help : str
    
60.             An optional tooltip that gets displayed next to the selectbox.
    
61.         on_change : callable
    
62.             An optional callback invoked when this selectbox's value changes.
    
63.         args : tuple
    
64.             An optional tuple of args to pass to the callback.
    
65.         kwargs : dict
    
66.             An optional dict of kwargs to pass to the callback.
    
67.         disabled : bool
    
68.             An optional boolean, which disables the selectbox if set to True.
    
69.             The default is False. This argument can only be supplied by keyword.
    
70.         label_visibility : "visible" or "hidden" or "collapsed"
    
71.             The visibility of the label. If "hidden", the label doesn't show but there
    
72.             is still empty space for it above the widget (equivalent to label="").
    
73.             If "collapsed", both the label and the space are removed. Default is
    
74.             "visible". This argument can only be supplied by keyword.
    

复制代码

还是得看源码啊，找到了用最后一个属性可以设置