streamlit控件和控制2

streamlit控件和控制2

目录

• streamlit控件和控制2
  • st.radio
  • st.selectbox
  • st.multiselect
  • st.select_slider
  • st.slider
  • st.progress
  • 参考资料

button：			  #按钮
download_button：  #文件下载
file_uploader：	  #文件上传
checkbox：	      #复选框
toggle:            #切换框
radio：		      #单选按钮
selectbox：	      #下拉单选框
multiselect：	  #下拉多选框
slider：		      #滑动条
select_slider：    #选择条
text_input：       #文本输入框
text_area：        #文本输入区域
number_input：     #数字输入框，支持加减按钮
date_input：       #日期选择框
time_input：	      #时间选择框
color_picker：     #颜色选择器

st.radio

import streamlit as st

genre = st.radio(
    "What's your favorite movie genre",
    [":rainbow[Comedy]", "***Drama***", "Documentary :movie_camera:"],
    index=None,
)

st.write("You selected:", genre)

import streamlit as st

# Store the initial value of widgets in session state
if "visibility" not in st.session_state:
    st.session_state.visibility = "hidden"
    st.session_state.disabled = False
    st.session_state.horizontal = False

col1, col2 = st.columns(2)

with col1:
    st.checkbox("Disable radio widget", key="disabled")                   # 是否显示
    st.checkbox("Orient radio options horizontally", key="horizontal")    # 选择是否水平

with col2:
    st.radio(
        "Set label visibility 👇",
        ["visible", "hidden", "collapsed"],
        key="visible",
        label_visibility="visible",                         # 标签的可见性,visible,hidden,collapsed
        disabled=st.session_state.disabled,                 # 是否禁止可选
        horizontal=st.session_state.horizontal,             # 是否水平垂直
    )

st.selectbox

st.selectbox(label, options, index=0, format_func=special_internal_function, key=None, help=None, on_change=None, args=None, kwargs=None, *, placeholder="Choose an option", disabled=False, label_visibility="visible")

import streamlit as st

option = st.selectbox(
   "How would you like to be contacted?",
   ("Email", "Home phone", "Mobile phone"),    
   index=None,                                         # 第一次加载的默认值
   placeholder="Select contact method...",
)
st.write('You selected:', option)

st.multiselect

st.multiselect(label, options, default=None, format_func=special_internal_function, key=None, help=None, on_change=None, args=None, kwargs=None, *, max_selections=None, placeholder="Choose an option", disabled=False, label_visibility="visible")

import streamlit as st

options = st.multiselect(
    'What are your favorite colors',
    ['Green', 'Yellow', 'Red', 'Blue'],    
    default=['Yellow', 'Red'])                # 多选的默认值

st.write('You selected:', options)

st.select_slider

import streamlit as st

start_color, end_color = st.select_slider(
    'Select a range of color wavelength',
    options=['red', 'orange', 'yellow', 'green', 'blue', 'indigo', 'violet'],
    value=('red', 'blue'))
st.write('You selected wavelengths between', start_color, 'and', end_color)

st.slider

st.slider(label, min_value=None, max_value=None, value=None, step=None, format=None, key=None, help=None, on_change=None, args=None, kwargs=None, *, disabled=False, label_visibility="visible")

# label 说明
# min_value 最小值
# max_value 最大值
# value     当前值   可以是元组
# step      步长

import streamlit as st

values = st.slider(
    'Select a range of values',
    0.0, 100.0, (25.0, 75.0))
st.write('Values:', values)

st.progress

import time
import streamlit as st

progress_bar = st.progress(0)
status_text = st.empty()

for i in range(1, 101):
    status_text.text("完成%i%%" % i)
    progress_bar.progress(i)
    time.sleep(0.1)

参考资料

https://docs.streamlit.io/library/get-started 官方文档

https://docs.streamlit.io/library/api-reference/widgets/st.selectbox