- 每个页面都是一个应用 （默认30s）
- 当前目录下pages 为各个页面应用
- GET请求使用 streamlit.query_params.get(‘id’)
- 全页面是按照 uploaded_file = st.file_uploader(“选择一张图片”, type=[“png”, “jpg”, “jpeg”])然后再判断uploaded_file
uploaded_file = st.file_uploader("选择一张图片", type=["png", "jpg", "jpeg"])
if uploaded_file is not None:
image = Image.open(uploaded_file)
st.image(image, caption="上传的图片", use_column_width=True)
save_path = os.path.join(UPLOAD_DIR, uploaded_file.name)
with open(save_path, "wb") as f:
f.write(uploaded_file.getbuffer())
st.success(f"图片已保存到：{save_path}")
import streamlit as st
from streamlit_pdf_viewer import pdf_viewer
st.header("Input info")
sx=st.text_input("TEXT")
user_age = st.slider("请选择您的年龄", 0, 100, 25)
tx=st.text_area("sqqqq")
btn_clicked = st.button("点击这里")
p=st.progress(0)
p.progress(user_age)
# 设置值
if btn_clicked:
st.write("mmmk",sx)
st.write("AGE",user_age)
st.write("Click")
st.write(p)
c=st.checkbox("同意吗")
st.write(c)
r=st.radio("选什么",{'axxxxxxx':"a",'bxxxx':"b",'c':"zzzzzzz"})
st.write("答案",r)
s=st.selectbox("选什么",['a',1,3,4,5])
st.write(s)
m=st.multiselect("选什么",['a',1,3,4,5])
st.write(m)
st.image("./a.jpg")
uploaded_file = st.file_uploader("选择一张图片", type=["png", "jpg", "jpeg"])
if uploaded_file is not None:
st.image(uploaded_file)
pv=st.file_uploader("上传PDF",type=['pdf'])
if pv is not None:
pdf_viewer(pv.read(),width=700,height=1000)
lst = ["苹果", "香蕉", "橙子"]
st.write(lst) # 默认 → ['苹果', '香蕉', '橙子']
st.code(lst, language="json") # 带灰底，更像代码块
st.markdown("\n".join(f"- {item}" for item in lst))
# //使用Markdown 实现显示列表进度
# 自由展示 columns
# 原始列表
fruit_list = [
{"name": "苹果", "price": 5.8, "pic": "apple"},
{"name": "香蕉", "price": 3.2, "pic": "banana"},
{"name": "橙子", "price": 4.5, "pic": "orange"},
]
# 用 columns 做“网格”：每行 3 张卡片
cols = st.columns(3)
for idx, fruit in enumerate(fruit_list):
col = cols[idx % 3] # 循环使用 3 列
with col:
# 卡片容器
with st.container(border=True):
# 1. 图（Unsplash 随机水果图）
img_url = f"https://source.unsplash.com/200x200/?fruit,{fruit['pic']}"
st.image(img_url, use_column_width=True)
# 2. 名称 + 价格
st.markdown(f"**{fruit['name']}**")
st.caption(f"¥{fruit['price']}/斤")
# 3. 数量选择
qty = st.number_input("斤数", min_value=0, max_value=20, step=1, key=f"qty_{idx}")
# 4. 折叠详情
with st.expander("查看详情"):
st.write("产地：南方优质果园")
st.write("甜度：★★★★☆")
# 5. 购买按钮
if st.button("加入购物车", key=f"buy_{idx}", type="primary"):
if qty == 0:
st.warning("请先选择数量！")
else:
st.success(f"已添加 {qty} 斤 {fruit['name']} 到购物车！")
