统一使用start.sh启动

两个demo页面

pages/form.py

@@ -1,47 +0,0 @@
-#!/usr/bin/env python3
-# -*- coding:utf-8 -*-
-import streamlit as st
-import pandas as pd
-import numpy as np
-
-
-def get_data():
-    df = pd.DataFrame({
-        "lat": np.random.randn(200) / 50 + 37.76,
-        "lon": np.random.randn(200) / 50 + -122.4,
-        "team": ['A', 'B'] * 100
-    })
-    return df
-
-
-if st.button('Generate new points'):
-    st.session_state.df = get_data()
-if 'df' not in st.session_state:
-    st.session_state.df = get_data()
-df = st.session_state.df
-
-with st.form("my_form"):
-    header = st.columns([1, 2, 2])
-    header[0].subheader('Color')
-    header[1].subheader('Opacity')
-    header[2].subheader('Size')
-
-    row1 = st.columns([1, 2, 2])
-    colorA = row1[0].color_picker('Team A', '#0000FF')
-    opacityA = row1[1].slider('A opacity', 20, 100, 50, label_visibility='hidden')
-    sizeA = row1[2].slider('A size', 50, 200, 100, step=10, label_visibility='hidden')
-
-    row2 = st.columns([1, 2, 2])
-    colorB = row2[0].color_picker('Team B', '#FF0000')
-    opacityB = row2[1].slider('B opacity', 20, 100, 50, label_visibility='hidden')
-    sizeB = row2[2].slider('B size', 50, 200, 100, step=10, label_visibility='hidden')
-
-    st.form_submit_button('Update map')
-
-alphaA = int(opacityA * 255 / 100)
-alphaB = int(opacityB * 255 / 100)
-
-df['color'] = np.where(df.team == 'A', colorA + f'{alphaA:02x}', colorB + f'{alphaB:02x}')
-df['size'] = np.where(df.team == 'A', sizeA, sizeB)
-
-st.map(df, size='size', color='color')

pages/test.py

@@ -0,0 +1,8 @@
+#!/usr/bin/env python3
+# -*- coding:utf-8 -*-
+import streamlit as st
+
+st.write('Hello World!')
+
+for i in range(1, 13):
+    st.write(f"{i}. this is line {i}")

pages/test2_input-output.py

@@ -0,0 +1,31 @@
+import random
+
+import streamlit as st
+import pandas as pd
+import numpy as np
+
+if "counter" not in st.session_state:
+    st.session_state.counter = 0
+
+st.session_state.counter += 1
+
+st.header(f"This page has run {st.session_state.counter} times.")
+st.button("Run it again")
+
+if "df" not in st.session_state:
+    st.session_state.df = pd.DataFrame(np.random.randn(20, 2), columns=["x", "y"])
+if "color" not in st.session_state:
+    st.session_state.color = "#FF0000"
+
+
+def generate_random_color():
+    rand_color = "#{:06x}".format(random.randint(0, 0xFFFFFF))
+    st.session_state.color = rand_color.upper()
+
+
+st.header("Choose a datapoint color")
+st.color_picker("Color", "#FF0000", key="color")
+st.button("random color", key="random_color", on_click=generate_random_color)
+st.divider()
+
+st.scatter_chart(st.session_state.df, x="x", y="y", color=st.session_state.color)