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app.py

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+import streamlit as st
+from bokeh.models.widgets import Button
+from bokeh.models import CustomJS
+from streamlit_bokeh_events import streamlit_bokeh_events
+import pandas as pd
+
+df = pd.DataFrame({"x": [1, 2, 3, 4], "y": ["a", "b", "c", "d"]})
+
+st.dataframe(df)
+
+copy_button = Button(label="Copy DF")
+copy_button.js_on_event("button_click", CustomJS(args=dict(df=df.to_csv(sep='\t')), code="""
+    navigator.clipboard.writeText(df);
+    """))
+
+no_event = streamlit_bokeh_events(
+    copy_button,
+    events="GET_TEXT",
+    key="get_text",
+    refresh_on_update=True,
+    override_height=75,
+    debounce_time=0)