Prerelease 1.43.0 - Embedded apps (#1237)

* switch to nightly

* File uploader for chat input

* Json column example

* Download button examples

* Paragraph padding in admonitions

Author: sfc-gh-dmatthews

python/api-examples-source/chat.input-file-uploader.py

@@ -0,0 +1,11 @@
+import streamlit as st
+
+prompt = st.chat_input(
+    "Say something and/or attach an image",
+    accept_file=True,
+    file_type=["jpg", "jpeg", "png"],
+)
+if prompt and prompt.text:
+    st.markdown(prompt.text)
+if prompt and prompt["files"]:
+    st.image(prompt["files"][0])

python/api-examples-source/data.json_column.py

@@ -0,0 +1,25 @@
+import pandas as pd
+import streamlit as st
+
+data_df = pd.DataFrame(
+    {
+        "json": [
+            {"foo": "bar", "bar": "baz"},
+            {"foo": "baz", "bar": "qux"},
+            {"foo": "qux", "bar": "foo"},
+            None,
+        ],
+    }
+)
+
+st.dataframe(
+    data_df,
+    column_config={
+        "json": st.column_config.JsonColumn(
+            "JSON Data",
+            help="JSON strings or objects",
+            width="large",
+        ),
+    },
+    hide_index=True,
+)

python/api-examples-source/requirements.txt

@@ -11,4 +11,4 @@ pydeck
 Faker
 openai
 vega_datasets
-streamlit>=1.42.0
+streamlit-nightly

python/api-examples-source/widget.download_button_csv.py

@@ -0,0 +1,28 @@
+import streamlit as st
+import pandas as pd
+import numpy as np
+
+
+@st.cache_data
+def get_data():
+    df = pd.DataFrame(
+        np.random.randn(50, 20), columns=("col %d" % i for i in range(20))
+    )
+    return df
+
+
+@st.cache_data
+def convert_for_download(df):
+    return df.to_csv().encode("utf-8")
+
+
+df = get_data()
+csv = convert_for_download(df)
+
+st.download_button(
+    label="Download CSV",
+    data=csv,
+    file_name="data.csv",
+    mime="text/csv",
+    icon=":material/download:",
+)

python/api-examples-source/widget.download_button_file.py

@@ -0,0 +1,10 @@
+import streamlit as st
+
+with open("python/api-examples-source/flower.png", "rb") as file:
+    st.download_button(
+        label="Download image",
+        data=file,
+        file_name="flower.png",
+        mime="image/png",
+    )
+    st.write(type(file))

python/api-examples-source/widget.download_button_text.py

@@ -0,0 +1,13 @@
+import streamlit as st
+import time
+
+message = st.text_area("Message", value="Lorem ipsum.\nStreamlit is cool.")
+time.sleep(.5) # Simulate some other code running
+
+st.download_button(
+    label="Download text",
+    data=message,
+    file_name="message.txt",
+    mime="text/txt",
+    on_click="ignore",
+)

styles/admonition.scss

@@ -7,11 +7,6 @@ div.admonition {
     @apply text-lg font-bold;
   }
 
-  // Text
-  p {
-    @apply mb-0;
-  }
-
   // Note
   &.note {
     @apply bg-lightBlue-10 dark:bg-lightBlue-100/30;